Given electric field $\overrightarrow {E} =[1 \times (d + x) \hat i +E_0 \hat j ] N/c$. If a closed surface as shown below is considered , find the change enclosed.

Question

 

$(A)\;\frac{acd}{2} \in_0 \\ (B)\;\frac{abc \in _o}{2} \\ (C)\;\frac{abd \in _0}{2} \\ (D)\;None$