Assertion : Newton?s second law of motion gives the measurement of force. Reason : According to Newton?s second law of motion, force is directly proportional to the rate of change of momentum.

• 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.