Geologists discovered that the largest coal deposits were formed around 300 million years ago. How did this observation support the theory of plate tectonics?
A. Around that time, those regions were located in tropical climates that were partially submerged on the coasts
B. Around that time, those regions were located near the south pole where the coal would likely have formed
C. Around that time, it is thought that those regions were located along the ridge of a long mountain chain
D. Around that time, those regions were located on arid platues in temperate regions.