Statement: Lock your valuables in a cupboard and call everybody gentleman.
Assumptions:
1. Valuables locked in cupboard cannot be stolen.
2. Stealing is a crime
Answer: A
The statement points out that a person who keeps his things locked away shall feel that every person is good because he has no danger for his things. So, I is implicit. The statement mentions nothing about the lawful nature of the act of stealing. So, II is not implicit,