The Wavelength of an Electron Whose Velocity Is 1

The wavelength of an electron whose velocity is 1.7 × 10⁴ m/s and whose mass is 9.1 × 10^{- 28} g is
__________ m.

A) 4.3 × 10^{- 8}
B) 12
C) 2.3 × 10⁷
D) 4.3 × 10^{- 11}
E) 2.3 × 10^{- 7}