If a Geologist Discovered Striations (Scratches)on Bedrock Surfaces and Small

If a geologist discovered striations (scratches) on bedrock surfaces and small hills composed of poorly sorted sediment,what could he or she conclude about the area?

A) that a fault used to run through the area
B) that the area used to be a beach along an ocean
C) that glaciers had once covered the area
D) that mountains had once covered the area