Assertion (A): a = 7 + and b = 7 - , then a2 - b2 = 14 Reason (R): a2 - b2 = (a + b)(a - b) = 14 x 2 1. A is true, but R is false. 2. A is false, but R is true. 3. Both A and R are true, and R is the correct reason for A. 4. Both A and R are true, and R is the incorrect reason for A.