Which of the Following Contracts Is Void

Which of the following contracts is void?

A) A contract with an insane person for a TV, where the insane person, or his legal representative, can prove that he was insane at the time of the contract but cannot prove anything else about the incident
B) A contract with an insane person for necessaries such as food and shelter
C) A contract containing an exculpatory clause limiting the liability of one of the parties
D) Any contract with a status Indian
E) A contract to sell a bag of cocaine