Not possible to be D... I think it's more likely a C.
BTW, whilst doing my research, I came across an article by the
Canadian Medical Association Journal entitled, "Breast size and
risk of Type 2 Diabetes Mellitus". 
Apparently, the larger the boob size, the higher the risk of
getting NIDDM (Non-Insulin Dependant Diabetes Mellitus)!
I think the study is flawed cause they failed to take into
account large boobies due to breast augmentation procedures.

and sometimes you wonder..........who thinks up these research
topics