Which one of the following statements is true concerning the applicability of the E1, E2, SN1, and SN2 mechanisms to reactions of tert-butyl bromide?

Which one of the following statements is true concerning the applicability of the E1, E2, SN1, and SN2 mechanisms to reactions of tert-butyl bromide?

a. The mechanisms available to (CH3)3CBr are SN1 and E1.
b. The mechanisms available to (CH3)3CBr are SN2 and E2.
c. The mechanisms available to (CH3)3CBr are SN1,SN2 and E1.
d. The mechanisms available to (CH3)3CBr are SN1,SN2 and E2
e. The mechanisms available to (CH3)3CBr are SN1, E1, and E2.