Which one of the following principles of adequate reality does Descartes endorse in the Third Meditation?

A. Any cause of an idea must have more representative reality than the idea has representative reality.
B. Any cause of an idea must have at least as much representative reality as the idea has intrinsic reality.
C. Any cause of an idea must have at least as much intrinsic reality as the idea has representative reality.
D. Any cause of an idea must have more intrinsic reality than the idea has representative reality.