Q5. A cyclist travels down a hill from rest at point X, without pedalling. He applies his brakes and the cycle stops at point Y.

Which energy changes have taken place between X and Y?

A) kinetic energy-> heat energy-> gravitational potential energy.

B) gravitational potential energy -> heat energy-> kinetic energy.

C) kinetic energy-> gravitational potential energy-> heat energy.

D) gravitational potential energy-> kinetic energy-> heat energy.​