Two Concentric Imaginary Spherical Surfaces of Radius R and 2R

Two concentric imaginary spherical surfaces of radius R and 2R respectively surround a positive point charge −Q located at the center of the surfaces.When compared to the electric flux Φ₁ through the surface of radius R,the electric flux Φ₂ through the surface of radius 2R is

A) .
B) .
C) Φ₂ = Φ₁.
D) Φ₂ = 2Φ₁.
E) Φ₂ = 4Φ₁.