How Fast Is the Electron Moving in the First Bohr

Multiple Choice

How fast is the electron moving in the first Bohr orbit?

A) 3.3 × 10⁶ m/s
B) 2.2 × 10⁶ m/s
C) 4.4 × 10⁶ m/s
D) 5.5 × 10⁶ m/s
E) 5.5 × 10¹⁵ m/s