For the statements (A) and Reason (R) given below, choose the correct option from the following:
Assertion (A): Rickets can be prevented by following a healthy diet.
Reason (R): Rickets is caused by vitamin D deficiency.
1. (A) is false, but (R) is true
2. (A) is true, but (R) is false
3. Both (A) and (R) are true, but (R) is not the correct description of (A)
4. Both (A) and (R) are true and (R) is the correct description of (A)