If a Nucleus Has Excited States Above the Ground State

If a nucleus has excited states above the ground state at 300 keV, 200 keV, and 80 keV, what gamma rays (in keV) may be expected from a collection of these excited nuclei? Choose the most complete set.

A) 300,200,80
B) 300,200,120,80
C) 100,120,80
D) 300,120,200,80,180
E) 300,220,200,120,100,80