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

Multiple Choice

The average distance of the electron from the proton in the hydrogen atom is 0.65 × 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) 3.4E+11 N/C
B) 5.4E+6 N/C
C) 5.2E+1 N/C
D) 2.2E-8 N/C
E) ​1.0E-8 N/C