Two bodies of different masses  are dropped from two different heights, viz; a and b. the ratio of time taken by the two to drop through these distances, is:

• A

  $\mathrm{a}:\mathrm{b}$

• B

  ${\mathrm{m}}_{\mathrm{a}}/{\mathrm{m}}_{\mathrm{b}}:\mathrm{b}/\mathrm{a}$

• C

  $\sqrt{\mathrm{a}}:\sqrt{\mathrm{b}}$

• D

  ${\mathrm{a}}^2:{\mathrm{b}}^2$