A.\({10^{ - 17}}\,\,{\rm{W}}/{m^2}\).
B.\({10^{ - 5}}\,\,{\rm{W}}/{m^2}\).
C.\({10^{ - 2}}\,\,{\rm{W}}/{m^2}\).
D.\({10^{ - 7}}\,\,{\rm{W}}/{m^2}\).

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