A Metal Sphere of Radius 10 Cm Carries a Charge

A metal sphere of radius 10 cm carries a charge of +2.0 μC uniformly distributed over its surface. What is the magnitude of the electric field due to this sphere at a point 5.0 cm outside the sphere's surface? (k = 1/4πε0 = 8.99 × 10⁹ N ∙ m²/C²)

A) 4.0 × 10⁵ N/C
B) 8.0 × 10⁵ N/C
C) 4.2 × 10⁶ N/C
D) 4.0 × 10⁷ N/C
E) 8.0 × 10⁷ N/C