Two bodies of different masses `m_a` and `m_b` are dropped from two different heights , viz `a` and `b` . The ratio of times taken by the two to drop through these distance is

Options

A. `a : b`
B. `m_a / m_b`: `b/a`
C. `sqrt(a) : sqrt(b)`
D. `a^2 : b^2`