hydrogen, nitrogen, carbon oxygen, sulfur, carbon carbon, hydrogen, oxygen nitrogen, carbon, sulfur
I gave my students this multiple choice question: One way humans store energy is by making the molecule glycogen. Clusters of which atoms are rearranged when the body digests plant sugars to make glycogen?

Only one answer is correct among these 4 choices:
- hydrogen, nitrogen, carbon
- oxygen, sulfur, carbon
- carbon, hydrogen, oxygen
- nitrogen, carbon, sulfur

Could you tell me which one is correct?

carbon, hydrogen, oxygen