A right circular imaginary cone is shown in figure A, B, and C are the points in the plane containing the base of the cone, while D is the point at the vertex of the cone. If `phi_A, phi_B, phi_C and phi_D` represent the fulx through the curved surface of the cone when a point charge Q is at points A, B, C, and D. respectively. then.
A. `phi_A = phi_C!=0`
B. `phi_D!=0`
C. `phi_B = Q/(2epsilon_0)`
D. `phi_A = phi_C = phi_D = 0`
