Match the following list of microbes and their importance. [2015]
| Column I | Column II | ||
| A. | Saccharomyces cerevisiae | (i) | Production of immuno-suppressive agent |
| B. | Monascus purpureus | (ii) | Ripening of Swiss cheese |
| C. | Trichoderma polysporum | (iii) | Commercial production of ethanol |
| D. | Propionibacterium shermanii | (iv) | Production of blood-cholesterol lowering agents |