A 750 kg car is moving at a speed of 20.0 ms⁻¹ when at a height of 5.0 m above the bottom of a hill when it runs out of fuel. The car coasts down the hill and then continues up the other side until it comes to rest. Ignoring frictional forces and air resistance, what is the value of h, the highest position the car reaches above the bottom of the hill?
A. 6 m
B. 15 m
C. 25 m
D. 45 m