A +40 μC-Point Charge and a -4

A +4.0 μC-point charge and a -4.0-μC point charge are placed as shown in the figure. What is the potential difference, V_A - V_B, between points A and B? (k = 1/4πε0 = 8.99 × 10⁹ N ∙ m²/C²)

A) 48 V
B) 96 V
C) 0.00 V
D) 96 kV
E) 48 kV