Assertion : The power of an engine depends on mass, angular speed, torque and angular momentum, then the formula of power is not derived with the help of dimensional method.

Reason : In mechanics, if a particular quantity depends on more than three quantities, then we cannot derive the formula of the quantity by the help of dimensional method.

• A

  If both the assertion and reason are true and reason is a true explanation of the assertion.
   

• B

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

• C

  If the assertion is true but reason is false.
   

• D

  If both the assertion and reason are false.