The answer to your question is BOTH A AND B
They are required to have legally acquired evidence
They are required to have a warrant of arrest
I am unsure of the third. However, it could be that a witness (aside from the victim and/or officer) was present.
Answer: Expressed power
Explanation:
The enumerated powers also refered to as explicit power, expressed powers, or delegated powers simply refers to the power that's given to the United States government based on the constitution.
They are those things that the constitution allows the government to do e.g. regulation of commerce, levying of taxes, raise an army, declare war, borrow and coin money, etc.
LOL go on a dating site or yubo for this typa stuff- jeezz