What is the acceleration due to gravity at surface of mass if its diameter is $6760\;km$ and mass is one tenth that of earth. The diameter of earth is $12742\;km$ acceleration due to gravity on earth $=9.8 m/s^2$

Question

\[(a)\;4.18\;m/s^2 \quad (b)\;3.03\;m/s^2 \quad (c)\;4.58\;m/s^2 \quad (d)\;3.48\;m/s^2 \]