Statement — “The university will display results only on the Internet rather than on main notice boards.”\nAssumptions:\nI. All enrolled students have Internet access at home.\nII. Earlier, most students referred to results on both Internet and notice boards.

Introduction / Context:
Policy changes about result display media require some accessibility assumptions, but not necessarily “at home” access or historical dual-check behavior.

Given Data / Assumptions:

• Statement: Results will be displayed only online.
• Assumption I: All students have home Internet.
• Assumption II: Previously, most students used both channels.

Concept / Approach:
The shift to online-only does not require “home” access (labs, libraries, cyber cafes suffice) nor does it hinge on prior usage of both channels by “most” students. The statement merely sets the new channel.

Step-by-Step Solution:
1) Test necessity of I: If students can access campus internet or phones, “home internet” is unnecessary.2) Test necessity of II: Past behavior is not required to justify the new policy.3) Therefore, neither assumption is essential.

Verification / Alternative check:
Even if many lacked home internet, central labs could still make the policy workable.

Why Other Options Are Wrong:
Only I/Only II/Either/Both all introduce details not needed for the simple announcement.

Common Pitfalls:
Equating “online-only” with “home internet for all.” Accessibility does not equal household connectivity.

Final Answer:
Neither I nor II is implicit.