What Is the Energy in Joules of a Mole of Photons

Multiple Choice

What is the energy in joules of a mole of photons with the energy of the 656 nm spectral line of hydrogen?

A) 2.62 × 10^-7 J
B) 78.3 J
C) 3.03 J
D) 8.73 × 10^-25 J
E) 1.82 × 10⁵ J