If There Are 5,000,000 Kcal of Energy Stored in Grain

Multiple Choice

If there are 5,000,000 kcal of energy stored in grain that could be fed either to chickens or humans and there is a small village of starving people that need to be fed,what is the most efficient way to feed the majority of the villagers?

A) Feed all of the grain to the villagers.
B) Feed all of the grain to chickens and let the villagers eat the eggs.
C) Feed all of the grain to chickens and let the villagers eat the chickens.
D) Feed some of the grain to chickens and some of it to villagers.