Consider the carboxyl group that is added to acetyI-CoA to make malonyl-CoA. Where is this carboxyl group incorporated into palmitic acid by fatty acid synthase?
A. at the free end
B. carbons 1,4,7,10 and 13 from the free end
C. at the end attached to fatty acid synthase
D. it is not incorporated into palmitic acid
E. carbons 3,6,9,12 and 15 from the free end