Proponents of the recent banking law changes assert that federal deregulation of investment procedures has neither exposed smaller banks to unfair competition nor increased corporate monopoly, and also has not compromised the government's basic long-term commitment to the free market.

a. neither exposed smaller banks to unfair competition nor increased corporate monopoly, and also has not
b. neither exposed smaller banks to unfair competition or increased corporate monopoly or
c. not exposed smaller banks to unfair competition or increased corporate monopoly, nor has it
d. not exposed smaller banks to unfair competition nor increased corporate monopoly, and it has not
e. neither exposed smaller banks to unfair competition, increased corporate monopoly, nor has it

OA-C; why D is wrong