Given below are two statements, one labelled Assertion (A) and the other labelled as Reason (R). Considering (A) and (R) with reference to Descartes' concept of substance, select the correct option.
Assertion (A) Mind and body are two relative substances.
Reason (R) Mind and body are dependent on each other.

A. Both A and R are true and R is the correct explanation of A

B. Both A and R are true, but R is not the correct explanation of A

C. A is true, but R is false

D. A is false, but R is true

Answer: Option C