Where Does a Tropical Cyclone or Hurricane Get Its Energy

Where does a tropical cyclone or hurricane get its energy?

A) in the heat and moisture rising from a low-pressure cell of the tropical ocean
B) from heat of the sun shining off a hot desert near the equator
C) from high temperatures of a humid high-pressure weather cell near the equator
D) from high summer temperatures over humid equatorial jungles
E) in the dry, cool air coming from a low-pressure cell of an adjacent ocean