Each Plate of a Parallel-Plate Air-Filled Capacitor Has an Area

Each plate of a parallel-plate air-filled capacitor has an area of 0.0020 m², and the separation of the plates is 0.020 mm. An electric field of 3.9 × 10⁶ V/m is present between the plates. What is the surface charge density on the plates? (ε₀ = 8.85 × 10-12 C²/N ∙ m²)

A) 35 µC/m²
B) 73 µC/m²
C) 17 µC/m²
D) 52 µC/m²
E) 87 µC/m²