They all look similar. Choice C looks a little thicker than the others but still has an attractive body type. Choice A almost gave me a boner but I'm not sure if that was because of any difference in body type or because I liked the top and jean shorts and the way she is standing. B looks good also and I really like the perky breasts on D so there are things I like about them all but if I had to choose based only on looks only I choose A.
They all look very nice, I think =] I can't really answer though, 'cos like, I quite like all body types, from very very thin to very very fat, and I think the nature of your curiosity isn't directed to someone like me, you know?