The surface of a metal is illuminated with the light of $$400$$ nm. The kinetic energy of the ejected photoelectrons was found to be $$1.68$$ eV. The work function of the metal is (hc $$= 1240$$ eVnm)

A

$$3.09$$ eV

B

$$1.41$$ eV

C

$$1.51$$ eV

D

$$1.68$$ eV