The Drilling Ships, Glomar Challenger and Joides Resolution Have Been

The drilling ships, Glomar Challenger and Joides Resolution have been used

A) to study wave and tide patterns in deep water.
B) as platforms for submarines and submersibles.
C) to identify areas for deep-sea mining.
D) to study Earth's crust beneath the sea.
E) as platforms for submarines and submersibles and to identify areas for deep-sea mining.