The Average Distance of the Electron from the Proton in the Hydrogen

The average distance of the electron from the proton in the hydrogen atom is 0.51*10^-10 m. What is the electric field from the proton's charge at the location of the electron? (k_e = 8.99 * 10⁹ N.m²/C², e = 1.6 *10^-19 C)

A) 8.8 *10^-8 N/C
B) 1.0 * 10⁶ N/C
C) 3.2 * 10² N/C
D) 5.5 *10¹¹ N/C