Work done by a body against friction results in a loss of its potential energy. Reason: In an elastic collision of two bodies, the momentum and energy of each body are conserved.
a) Both Assertion and Reason are true, and the Reason is the correct explanation of the Assertion.
b) Both Assertion and Reason are true, but the Reason is not the correct explanation of the Assertion.
c) The Assertion is true, but the Reason is false.
d) The Assertion is false, but the Reason is true.