Assertion : Power of machine gun is determined by both, the number of bullet fired per second and kinetic energy of bullets. Reason : Power of any machine is defined as work done (by it) per unit time.

• 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.