Assertion (A): If x ≥ 5 and x + 1/x = m, then x - 1/x = m - 2. Reason (R): (x - 1/x)^2 = (x + 1/x)^2 - 4 ⇒ x - 1/x = √(x + 1/x)^2 - 4 = √m^2 -4 = m - 2 1. A is true, R is false. 2. A is false, R is true. 3. Both A and R are true. 4. Both A and R are false.