A car accelerates uniformly from 18 $$kmh^{-1}$$ to 72 $$kmh^{-1}$$ in 5 s. The acceleration of the car is:

A

3 $$ms^2$$

B

10.8 $$ms^{-2}$$

C

10.8 $$ms^2$$

D

3 $$ms^{-2}$$