Assertion (A): CD = 3 x AB = 3 x 10 m = 30 m Reason (R): In △ABC, tan30° = 10m/BC ⇒ BC = 10√3 m tan 30° = 10√3m/CD ⇒ CD = 30 m 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.and R are false.