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 reason is a true explanation of assertion.
   

• B

  If both assertion and reason are true but reason is not the correct explanation of assertion
   

• C

  If assertion is true but reason is false.
   

• D

  If both assertion and reason are false.