Each of the 80 writers in a certain club is either exclusively lefthanded or exclusively right-handed. If there are 12 more lefthanded writers in the club than right handed writers, how many of the writers are not left-handed?

GMAT QUANT Problem Solving Level 500, Overlapping Sets
Each of the 80 writers in a certain club is either exclusively lefthanded or exclusively right-handed. If there are 12 more lefthanded writers in the club than right handed writers, how many of the writers are not left-handed?

A. 28

B. 32

C. 34

D. 46

E. 52