Consider the following statements- Assertion (A): Intense light is undesirable at bedtime. Reason (R): Melatonin is produced in the body by intense light. Select the correct answer using the code given below- Code:

• (a)(A) and (R) both are true and (R) is the correct explanation of (A).
• (b)(A) and (R) both are true but (R) is not the correct explanation of (A).
• (c)(A) is true but (R) is false.
• (d)(A) is false but (R) is true.