Two charges of magnitude `-2Q and +Q` are located at points `(a,0) and (4a,0)` respectively .
What is the electric flux due to charges through a sphere of radius '3a' with its center at the origin.

Options

A. `Q/(2varepsilon_0)`
B. `Q/(varepsilon_0)`
C. `- (2Q)/(varepsilon_0)`
D. `(2Q)/(varepsilon_0)`

Answer

C