A stone falls freely under gravity.It covers distances $$h_{1},h_{2},h_{3}$$ in the first five seconds ,the next five seconds and the next 5 seconds respectively .The relation between $$h_{1},h_{2}$$ and $$h_{3}$$ is:

A

$$h_{1}=h_{2}=h_{3}$$

B

$$h_{1}=2h_{2}=3h_{3}$$

C

$$h_{1}=\frac{h_{2}}{3}=\frac{h_{3}}{5}$$

D

$$h_{2}=3{h_{1}}$$ and $$h_{3}=3{h_{2}}$$