An electron is accelerated from rest through a potential difference $V$.

Which of the following is the de Broglie wavelength of the electron after acceleration?

A.     $\frac{h}{{\sqrt {2{m_{\text{e}}}Ve} }}$

B.     $\sqrt {\frac{{2{m_{\text{e}}}h}}{{{V^2}}}}$

C.     $\frac{h}{{2{m_{\text{e}}}{V^2}{e^2}}}$

D.     $\frac{{{V^2}}}{{2{m_{\text{e}}}h}}$

A