Two bodies A and B of equal mass are suspended from two separate massless springs of spring constant `k_1 and k_2` respectively. If the bodies iscillte vertically such that their maxixum velocities are equal, the ratio of the amplitude of A to that of B is
A. `k_1/k_2`
B. `sqrt(k_1/k_2)`
C. `k_2/k_1`
D. `sqrt(k_2/k_1)`