Assertion : The speed of a body can be negative. Reason : If the body is moving in the opposite direction of positive motion, then its speed is negative.

• 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.