When the Magnitude of the Charge on Each Plate of an Air-Filled

When the magnitude of the charge on each plate of an air-filled capacitor is 4 μC,the potential difference between the plates is 80 V.What is the capacitance of this capacitor?

A) 0.1 µF
B) 50 µF
C) 100 µF
D) 20 µF
E) 50 nF