In mutual fund investing, what is the full form of the abbreviation SIP?

Introduction / Context:
This question tests basic knowledge of personal finance terminology used in mutual fund investing. The term SIP is extremely common in retail investing in India and globally. Understanding its full form and meaning helps investors appreciate why regular and disciplined investing often works better than irregular lump sum decisions for salaried individuals.

Given Data / Assumptions:
- The abbreviation in the question is SIP.
- The context is mutual fund or investment products rather than general savings accounts.
- Only one of the options matches the widely accepted expansion used by fund houses and regulators.

Concept / Approach:
SIP stands for Systematic Investment Plan. Under a SIP, an investor commits a fixed amount of money at regular intervals, usually monthly, into a mutual fund scheme. The word systematic indicates a disciplined, planned, and recurring approach rather than sudden or random investment. This idea directly eliminates alternatives that suggest sudden or vague savings plans.

Step-by-Step Solution:
Step 1: Recall the standard full form used by mutual funds, distributors, and financial planners for SIP. Step 2: Match that memory with the given options. Step 3: Option B, Systematic Investment Plan, exactly matches the industry standard expansion. Step 4: Confirm that no other option reflects the same meaning or accepted terminology.

Verification / Alternative check:
You can verify by checking any mutual fund advertisement, offer document, or official regulator material where SIP is explained as Systematic Investment Plan. Educational campaigns and calculators on asset management company websites also describe SIP in the same way. This consistency across sources confirms that option B is correct.

Why Other Options Are Wrong:
Option A, Sudden Investing Plan, contradicts the very idea of discipline and regularity; sudden investment is the opposite of systematic investment. Option C, Savings Investments Plan, looks similar but is not the recognised formal expansion and is not used in mutual fund documents. Option D, None of the above, is wrong because there is a correct standard expansion among the options.

Common Pitfalls:
Learners sometimes misremember the second word as savings instead of systematic because SIP is related to savings. Another pitfall is thinking that SIP is itself a product, when in reality it is a method or mode of investing in a mutual fund. Remembering that the keyword is systematic will help avoid confusion and make it easy to pick the correct expansion in exams.

Final Answer:
The correct choice is Systematic Investment Plan.