An electron of mass m with an initial velocity $$\overrightarrow{V}=V_{0} \hat{i} (V_{0}>0)$$ enters an electric field $$\overrightarrow{E}=-E_{0} \hat{i}$$ $$(E_{0}=constant >0)$$ at t=0. If $$\lambda_{0}$$ is its de-Broglie wavelength initially, then its de-Broglie wavelength at timet is

A

$$\lambda_{o}$$

B

$$\lambda_{o} t$$

C

$$\lambda_{o} \left(\begin{array}{c}1+\frac{eE_{0}}{m v_{0}} t\end{array}\right)$$

D

$$\frac{\lambda _{o}}{\left(\begin{array}{c}1+\frac{eE_{0}}{m v_{0}} t\end{array}\right)}$$