Which of the following is the best reason for the smaller number of drone bees compared to the number of worker bees in a beehive?

Question

a. the drones are always away from the hive pollinating flowers.
B. because worker bees are smaller than drone bees, more workers can fit into a small space.
C. it take one drone to fertilize a queen, so only small number of drones are necessary at any one time
D. Drones live a long time because they do little work.
E. There is not an excess of honey to feed many drone bees.

Answer?
C

Answer 1

C looks good to me.

Answer 2

Definitely C.