PLEASE HELP MEEE its multiple choic

Level of organization order from largest to smallest:

A: cell, bacteria, virus

B: virus, cell, bacteria

C: bacteria, virus, cell

D: cell, virus, bacteria

Students in biology are studying the macromolecules of life. they used a calorimeter to determine the calories in various types of food. once the lab was completed, the students ate the left over food samples. monica commented that in just 6 or 7 "chews" of the saltine, it was gone; nothing but a sticky paste in her mouth. elaborate on what happened chemically while chewing the saltine. include the macromolecules present.