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13.The figure shows a Gaussian rectangular structure with sides parallel to the axes and in the electric field  =(3.00x+2.00) +4.00 +14.0 N/C. What is the charge ( C ) enclosed by the structure?

 
(A) 7.91×10^-11,
(B) 9.56×10^-10,
(C) 2.66×10^-9,
(D) 0,
(E) 3.72×10^-8.