Which of the following is correct for the de Broglie wavelength λ of a particle when the kinetic energy of the particle is E_K?

A. \(\lambda  \propto \frac{1}{{{E_{\rm{K}}}}}\)

B. \(\lambda  \propto \frac{1}{{\sqrt {{E_{\rm{K}}}} }}\)

C. \(\lambda  \propto {E_K}\)

D. \(\lambda  \propto {E_K}^{\rm{2}}\)

B