4.40 The x-y plane contains a uniform sheet of charge with Ps1 = 0.2 (nC/m²). A second sheet with Ps2 = –0.2 (nC/m²)occupies the plane z = 6 m. Find

VAB, VBC, and VAC for A(0,0,6 m), B(0,0,0), and C(0,-2 m,2 m).