Given below are two statements:
| Assertion (A): | It is not possible to have interference between the waves produced by two violins. | 
| Reason (R): | For interference of two waves the phase difference between the waves must remain constant.Given below are two statements. | 
| 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. |