The frequency (v) of an oscillating liquid drop may depend upon radius (r) of the drop, density (p) of liquid and the surface tension (s) of the liquid $\mathrm{as}: v=\mathrm{r}^{\mathrm{a}} \rho^{\mathrm{b}} \mathrm{s}^{\mathrm{c}}$. The values of a, b and c respectively are
