A Blackbody Is an Ideal System That

A blackbody is an ideal system that

A) absorbs 100% of the light incident upon it, but cannot emit light of its own (i.e., a "black" body) .
B) emits 100% of the light it generates, but cannot absorb radiation of its own.
C) either absorbs 100% of the light incident upon it, or emits 100% of the radiation it generates.
D) absorbs 50% of the light incident upon it, and emits 50% of the radiation it generates.
E) absorbs 95% of the light incident upon it, and emits 5% of the radiation it generates.