A Parallel-Plate Capacitor Is Filled with a Dielectric with K

A parallel-plate capacitor is filled with a dielectric with K = 4. The plate area is 3 m² and the plate separation is 2 mm. The capacitance of this capacitor is

A) 8 nF.
B) 210 nF.
C) 18 nF.
D) 53 nF.
E) 13 nF.