A square surface of side L meter in the plane of the paper is placed in a uniform electric field E (volt/m) acting along the same plane at an angle $\theta$ with the horizontal side of the square as shown in figure. The electric flux linked to the surface, in units of volt-m, is <br>

Question

( A ) $EL^2$
( B ) $EL^2 sin\theta$
( C ) Zero
( D ) $EL^2 cos\theta$