An electron of mass m is moving with kinetic energy k and momentum p. The de-Broglie wavelength associated will be:

(A) $\lambda=\frac{\sqrt{2 mk}}{p}$
(B) $\lambda=\frac{p}{h}$
(C) $\lambda=\frac{h}{p}$
(D) $\lambda=\frac{h}{\sqrt{2 mk}}$

Choose the correct answer from the options given below:

(C) and (D) only

The correct answer is Option (3) → (C) and (D) only