Three Point Charges, -2

Three point charges, -2.00 μC, +4.00 μC, and +6.00 μC, are located along the x-axis as shown in the figure. What is the electric potential (relative to infinity) at point P due to these charges? (k = 1/4πε₀ = 8.99 × 10⁹ N ∙ m²/C²)

A) -307 kV
B) +307 k V
C) -154 kV
D) +154 kV
E) 0.00 kV