If Two Valleys Are Carved Out of the Exact Same

Multiple Choice

If two valleys are carved out of the exact same type of rock and under the exact same climatic conditions,what would we expect an older valley to look like compared to a younger valley?

A) The older valley would have steep sides,the younger would have gentle sides.
B) The younger valley would have steep sides,the older would have gentle sides.
C) The older valley would contain many more depositional features than the younger.
D) The younger valley would contain many more depositional features than the older.