hi I was thinking between D and E...But then I picked D because the argument says that although NOT all Good Cooks are Big Eaters, They atleast enjoy preparing and serving food. So there must be more Good cooks who Enjoy Preparing and serving food than there are Big Eaters.
With E, The argument says that NOT all good cooks are are Big Eaters. SO there must be SOME good cooks who ARE big Eaters. SO there is a Possibility that the Cooks mentioned in the Argument might come in that "SOME" big eaters Category. So I did NOT pick this answer.
So what is the official answer.
Nice Monarc, I just had to go home and ponder over this a bit but it is now clear to me. Keep going buddy