Assertion (A) : In an operon, the regulator and operator genes are not associated with the constitutive genes. Reason (R) : Constitutive genes need not be repressed.

Options :

1. Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of the Assertion (A).

2. Both Assertion (A) and Reason (R) are true, but Reason (R) is not the correct explanation of the Assertion (A).

3. Assertion (A) is true, but Reason (R) is false.

4. Assertion (A) is false, but Reason (R) is true.