C#.NET — Evaluate truth, short-circuiting, and condition outcomes for: if (age > 18 && no < 11) a = 25;

Introduction / Context:
This tests understanding of the logical AND operator && in C#, including short-circuit evaluation and the exact condition needed for assignment to execute.

Given Data / Assumptions:

• Statement: if (age > 18 && no < 11) a = 25;
• Options list claims about evaluation order and when a = 25 runs.

Concept / Approach:
In C#, && is a short-circuiting operator. The right-hand condition is evaluated only if the left-hand condition is true. The if body executes only if both subconditions evaluate to true.

Step-by-Step Solution:

Verification / Alternative check:
Truth table for && confirms that the right operand evaluates only when the left operand is true and the overall result is true only when both are true.

Why Other Options Are Wrong:

• A: includes 3 which is false.
• B: includes 2 which is false.
• D: includes 3 which is false.
• E: incorrect because a correct combination exists.

Common Pitfalls:
Confusing && with ||, or assuming both sides always evaluate. With &&, the second operand can be skipped.

Final Answer:
1, 4, 5