Assertion : It is not possible to have interference between the waves produced by two violins. Reason : For interference of two waves the phase difference between the waves must remain constant.

• A. If both assertion and reason are true and the reason is the correct explanation of the assertion.
• B. If both assertion and reason are true but reason is not the correct explanation of the assertion.
• C. If assertion is true but reason is false.
• D. If the assertion and reason both are false.
• E. If assertion is false but reason is true.