Find potential difference $\;V_{AB}\;$ between $\;A(0,0,0)$ and $\;B(1m ,1m, 0)\;$ in an electric field $\;\overrightarrow{E}=y \hat{i}+x \hat{j}$

Question

$(a)\;0 V\qquad(b)\;1 V\qquad(c)\;2 V\qquad(d)\;None$