Wegener's Idea of Continental Drift Was Rejected by American Geologists

Wegener's idea of continental drift was rejected by American geologists because

A) his research background in meteorology and glaciology disqualified him to study geology.
B) he could not conceive of a valid mechanism that would cause continents to shift positions.
C) he had relatively little evidence supporting the existence of a supercontinent.
D) the apparent fit of continental coastlines is blurred when the margins are defined by the edges of continental shelves rather than sea level.