The Energy of a Photon of Wavelength 400 Nm Is $\times$

The energy of a photon of wavelength 400 nm is _____________.

A) 3.11 $\times$ 10^-19 J
B) 3.50 $\times$ 10^-19 J
C) 3.87 $\times$ 10^-19 J
D) 4.25 $\times$ 10^-19 J
E) 4.97 $\times$ 10^-19 J