How Do Glaciers Acquire Their Load of Sediment

Multiple Choice

How do glaciers acquire their load of sediment?

A) Sediments and rocks fall off the cliffs surrounding the glacier and move through crevasses to the base of the glacier.
B) Sediments and rocks form on top of the glaciers through lithification.
C) Sediments and rocks are plucked off the ground surface at the base and sides of the glacier.
D) Sediments and rocks are deposited on glaciers by streams that flow into the glaciers.
E) All of the answers describe major contributors to the glacial load.