I Need help ASAP! The diagram below shows the process of waterfall
formation and the types of rock that are usually involved.

Which statement most likely explains how the process of waterfall formation
relates to erosion?
A. Softer rock is eroded more quickly than harder rock.
B. The water moves more quickly as it goes over harder rock than
softer rock
C. Softer rock is more affected by the force of gravity than harder
rock.
D. Harder rock is more easily weathered than softer rock.