The potential difference between two parallel wires in air is 120V. They hold equal and opposite charges of 3.5 × 10⁻¹³ C. What is the capacitance of the two wires?
a) 3.43 × 10⁻¹⁵ F
b) 8.57 × 10⁻¹⁵ F
c) 1.71 × 10⁻¹⁴ F
d) 6.86 × 10⁻¹⁴ F