Assertion (A) : Two successive discounts of 10% and 5% are equal to a single discount of . Reason (R) : Rate of discount = . 1. Both A and R are correct, and R is the correct explanation for A. 2. Both A and R are correct, and R is not the correct explanation for A. 3. A is true, but R is false. 4. A is false, but R is true.