Why Don't We See Pronounced Seasons at the Equator

Multiple Choice

Why don't we see pronounced seasons at the equator?

A) The sun hits the equator more directly than any other latitude throughout the whole year.
B) The amount of mass at the center of the Earth allows it to hold more heat and achieve constant temperature year-round.
C) There is more water at the equator, and the heat held by the water keeps the temperature constant at the equator.
D) There is more land at the equator; the heat it absorbs during the day heats the air at night, so temperature stays constant.