Light of frequency 4${\mathrm{v}}_0$ is incident on the metal of the threshold frequency ${\mathrm{v}}_0$. The maximum kinetic energy of the emitted photoelectrons is

• A

  $3{\mathrm{hv}}_{\mathrm{o}}$

• B

  $2{\mathrm{hv}}_{\mathrm{o}}$

• C

  $\frac{3}{2}{\mathrm{hv}}_{\mathrm{o}}$

• D

  $\frac{1}{2}{\mathrm{hv}}_{\mathrm{o}}$