Two bodies of mass $10^2 kg$ and $10^3kg$ are lying 1m apart. The gravitational potential at mid point of line joining them is

Question

$$(a)\;0 \quad (b)\;-1.47\;J/kg \quad (c)\;1.47 \;J/kg \quad (d)\;1.47 \times 10^{-7} J/kg$$