In Order to Lose Weight and Reduce Body Fat, a Friend

In order to lose weight and reduce body fat, a friend of yours has decided to eliminate all fat from his diet, while consuming unrestricted amounts of carbohydrates. What do you think of this idea?

A) It is a bad idea, because if ATP levels are high in cells, excess acetyl-CoA from the metabolism of carbohydrates can be used for fatty acid synthesis.
B) It is a good idea, because under conditions where ATP levels are low in cells, carbohydrates will be stored, and fat stores will be catabolized via beta-oxidation to generate energy.
C) It is a good idea, because if your friend doesn't eat any fat, he cannot store any additional fat.
D) It is a bad idea, because consumption of fat is required to provide cofactors for the electron transport chain.