When an Electron in a Hydrogen Atom Jumps from N $\times$

Multiple Choice

When an electron in a hydrogen atom jumps from n = 2 to n = 1, the photon emitted is of frequency f = 4.572 $\times$ 10¹⁴ Hz. What is the energy of the photon?

A) 2.187 $\times$ 10^-15 J
B) 3.029 $\times$ 10^-19 J
C) 3.33 $\times$ 10^-9 J
D) 6.623 $\times$ 10^-34 J
E) None of these is correct.