Assertion (A): Each of the numbers ∛2, ∛3, ∛4, ∛5, ∛6, ∛7 is irrational. Reason (R): The cube roots of all natural numbers is irrational. 1. A is true, R is false 2. Both A and R are true 3. A is false, R is true 4. Both A and R are false.