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 accelerations is .........
Options:
(a) `m_1r_1:m_2r_2`
(b) `m_1 :m_2`
(c) `r_1 :r_2`
(d) `1:1`