How Were the Landing Sites for the Apollo Missions Selected

How were the landing sites for the Apollo missions selected?

A) The first ones were on flat, relatively safe terrain while the final ones were on more challenging upland terrain.
B) All were on the unknown far side of the Moon because the near side had already been thoroughly studied from Earth.
C) Each Apollo set down where a robotic Surveyor had previously landed to explore the landing site.
D) To explore at different latitudes, one Apollo set down at each pole, one at the equator, and the rest at middle latitudes.