$6)$ A metal has a work function of $4\mathrm{.}0{10}^{-19}$ joules. If light of frequency $7\mathrm{.}5{10}^{14}Hz$ is shone on the metal, will electrons be emitted, and if so$,$ what is the maximum kinetic energy of the emitted electrons in joules?

A$)$ Ves,$0\mathrm{.}9695{10}^{-19}J$

B$)$ Yes, $1\mathrm{.}1{10}^{-19}J$

C$)$ Yes, $0\mathrm{.}5{10}^{-19}J$

D$)$ Yes, $0\mathrm{.}75{10}^{-19}J$

E$)$ No$,$ insufficient energ