Assertion (A): An electrical motor converts mechanical energy into electrical energy.
Reason (R): An electrical motor works on the principle of mutual induction.

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. Both (A) and (R) are false
d. (A) is true but (R) is false