Why Is the Rock Cycle Considered a "Cycle

Multiple Choice

Why is the rock cycle considered a "cycle"?

A) Rock goes from one form to the next in a very strict order.
B) Rock material is constantly being recycled into different forms or back to magma.
C) Rocks are round like a cycle.
D) Rocks periodically change on a set time scale.
E) It describes one form that rocks can take in their lifetimes.