Some equipotential surfaces are shown in the figure. The magnitude and direction of the electric field is

$100V{m}^{-1}$ making angle ${120}^0$ with the x-axis 

$200V{m}^{-1}$ making angle ${120}^0$ with the x-axis

$200V{m}^{-1}$ making angle ${60}^0$ with the x-axis

None of these