A Carbon Dioxide Laser Emits Photons of 10 $\mu$ M Wavelength $\times$

A carbon dioxide laser emits photons of 10.6 $\mu$ m wavelength.How many photons per second are emitted by a 10.0 kW CO₂ laser?

A) 4.27 $\times$ 10²¹
B) 5.39 $\times$ 10³⁰
C) 3.17 $\times$ 10¹⁸
D) 5.34 $\times$ 10²³
E) 6.20 $\times$ 10²³