Assertion (A): On prolonged chewing of boiled potato, it gives sweet taste.
Reason (R): Saliva has salivary amylase.
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true but (R) is not the correct explanation of (A).
3. (A) is true but (R) is false.
4. Both (A) and (R) are false.