If the velocity of light c, universal gravitational constant G and Planck’s constant h are chosen as fundamental quantities. The dimensions of mass in the new system is:

Dimension formula of velocity of light $={\mathrm{M}}^{\circ }{\mathrm{L}}^1{\mathrm{T}}^{-1}$
Dimension formula of Planck’s constant ${\mathrm{M}}^1{\mathrm{L}}^2{\mathrm{T}}^{-1}$
Dimension formula of (G) constant $={\mathrm{M}}^{-1}{\mathrm{L}}^3{\mathrm{T}}^{-2}$
Dimension formula of Mass $={\mathrm{M}}^1{\mathrm{L}}^{\circ }{\mathrm{T}}^{\circ }$
from the options 

$ch={\mathrm{ML}}^3{\mathrm{T}}^{-2}$

now  $\frac{ch}{\mathrm{G}}=\frac{{\mathrm{ML}}^3{\mathrm{T}}^{-2}}{{\mathrm{M}}^{-1}{\mathrm{L}}^3{\mathrm{T}}^{-2}}={\mathrm{M}}^2$

$\mathrm{M}={\left(\frac{\mathrm{ch}}{\mathrm{G}}\right)}^{\frac{1}{2}}={\mathrm{c}}^{\frac{1}{2}}{\mathrm{h}}^{\frac{1}{2}}{\mathrm{G}}^{-\frac{1}{2}}$