The diagram illustrates part of the human alimentary canal and related organs. Which row gives the functions of the parts shown in the diagram?
- Astructure 1: digestion of protein; structure 3: absorption of the products of digestion
- Bstructure 2: emulsifying fats; structure 3: absorption of amino acids and glucose
- Cstructure 4: production of bile; structure 5: making digestive enzymes
- Dstructure 4: storing digestive enzymes; structure 2: making digestive enzymes