Light of frequency \(f\) is incident on a metal surface. The work function of the metal is \(\phi \). Which of the following is the maximum kinetic energy of the electrons emitted from the surface?

A.     \(hf - \phi \)

B.     \(\frac{h}{e}(f - \phi )\)

C.     \(\phi  - hf\)

D.     \(\frac{h}{e}(\phi  - f)\)

A