An Eccentric Billionaire Wants to Build a Mansion in a Location

Multiple Choice

An eccentric billionaire wants to build a mansion in a location on Earth where the effect of the seasons is the least pronounced -- where summer and winter are not that different. Where should his personal astronomer advise him to build?

A) at the equator
B) at the North Pole
C) at the South Pole
D) at the Tropic of Cancer (23⁰ N)
E) in Bayonne, New Jersey