How Many Photons Are Contained in a Burst of Yellow

Multiple Choice

How many photons are contained in a burst of yellow light (589 nm) from a sodium lamp that contains 609 kJ of energy?

A) 3.37 × 10¹⁹ photons
B) 3.06 × 10³⁰ photons
C) 1.80 × 10²⁴ photons
D) 4.03 × 10²⁸ photons
E) 2.48 × 10²⁵ photons