If the De Broglie Wavelength of an Electron Is 44 $\times$

Multiple Choice

If the de Broglie wavelength of an electron is 44 nm,what is its velocity? The mass of an electron is 9.11 $\times$ 10^-31 kg.

A) 6.0 $\times$ 10^-5 m/s
B) 1.2 $\times$ 10³ m/s
C) 1.7 $\times$ 10⁴ m/s
D) 3.1 $\times$ 10¹⁰ m/s
E) 4.8 $\times$ 10²² m/s