In the matching, we observe that:
- Zymase is used in the conversion of sucrose to glucose and fructose.
- Pepsin is used in the conversion of proteins to peptides.
- Invertase is involved in the breakdown of starch to maltose.
- Diastase is used in the conversion of glucose to ethanol and carbon dioxide.
Thus, the correct matching is A-III, B-II, C-IV, D-I.