The gravitational field in a region is given by: $\vec { E } = ( 5 \mathrm{N/kg} ) \hat { i } + ( 12 \mathrm{N/kg} ) \hat { j }$. If the potential at the origin is taken to be zero, then the ratio of the potential at the points $( 12 \mathrm {~m} , 0 )$ and $( 0,5 \mathrm {~m} )$ is:\\
(1) Zero\\
(2) 1\\
(3) $\frac { 144 } { 25 }$\\
(4) $\frac { 25 } { 144 }$