In Terms of Contractual Capacity

In terms of contractual capacity:

A) a minor can disaffirm and walk away from a contract even if already executed and the minor has benefited from it.
B) intoxicated individuals are generally always held liable for their contractual obligations,regardless of their condition upon execution of the contract.
C) an insane person can never have contractual capacity by definition.
D) if a minor benefits from a contract and then disaffirms it,he/she must fulfill the duty of restoration.