A point charge q=12.5 $\mu $C is placed at origin . Find the electric field vector at the point $\;(4 , 3)$ .

Question

$(a)\;3.6 \hat{i}+1.8 \hat{j}\qquad(b)\;3.6 \hat{i}-2.7 \hat{j}\qquad(c)\;-3.6 \hat{i}+2.7 \hat{j}\qquad(d)\;3.6 \hat{i}+2.7\hat{j}$