Which of the following explains why seasonal changes, for example, in temperature and/or precipitation, are greater at middle to high latitudes than seasonal changes at equatorial latitudes?

A) the variation in proximity of the Earth to the sun is less drastic at the equator
B) the angle of Earth's axis with respect to the plane of its orbit around the sun causes solar rays to vary the most within the year at mid-latitudes
C) the microclimates at middle and low latitudes are more variable than at the equator
D) the yearly wobble of Earth's tilt causes higher latitudes to fluctuate, while the equator remains stable