The Usefulness of Aerial Photography for Archaeology

The usefulness of aerial photography for archaeology:

A) was not recognized until the 1960s, during the development of the "New Archaeology."
B) is limited to times of cloud cover or haze.
C) is limited to photographs taken at very high elevations, since this is where resolution is greatest.
D) lies in the fact that aerial photographs can show features that are too indistinct or too large to discern from the ground.