Two cars of masses $$m_1$$ and $$m_2$$ are moving in circles of radii $$r_1$$ and $$r_2$$, respectively. Their speeds are such that they make complete circles in the same time $$t$$. The ratio of their centripetal acceleration is

A

$$m_1 r_1 : m_2 r_2$$

B

$$m_1 : m_2$$

C

$$r_1 : r_2$$

D

$$1 : 1$$