The photoelectric threshold wavelength for silver is $\lambda_{0}$. The energy of the electron ejected from the surface of silver by an incident wavelength $\lambda$ (where $\lambda < \lambda_{0}$) will be:

• A
  $h c(\lambda_{0}-\lambda)$
• B
  $\frac{h c}{\lambda_{0}-\lambda}$
• C
  $\frac{h}{c}(\frac{\lambda_{0}-\lambda}{\lambda \lambda_{0}})$
• D
  $h c(\frac{\lambda_{0}-\lambda}{\lambda \lambda_{0}})$