During the Carter administration, Zbigniew Brzezinski
A. tried to reverse the policy of détente.
B. tried to get Carter to roll back taxes.
C. was directly involved in continuing the SALT talks.
D. rejected the adoption of the MX missiles to replace the older Minute Man missiles
From what I've read I think it's C, but A also looks like it could be the answer.
http://en.wikipedia.org/wiki/Zbigniew_Brzezinski
Read carefully.