Which of the Following Surfaces Have the Largest Total Electric

Multiple Choice

Which of the following surfaces have the largest total electric flux?

A) a sphere of radius 1 m with a 1-C charge placed inside at the center
B) a sphere of radius 1 m with a 1-C charge placed inside but off-center
C) a cylinder of radius 1 m and length 1 m with a 1-C charge placed inside
D) a 1-m cube with a 1-C charge placed in the center
E) a sphere of radius 1 m with a 2-C charge placed inside and a 1-C charge placed outside