Step 1: Concept
Microbes are used commercially to produce various bioactive molecules.
Step 2: Analysis of Options
Cyclosporin A: An immunosuppressive agent produced by the fungus \textit{Trichoderma polysporum}.
Statins: Blood cholesterol-lowering agents produced by the yeast \textit{Monascus purpureus}.
Acetobacter aceti: Used for the production of acetic acid, not antibiotics.
Step 3: Conclusion
Option (A) is the only correctly matched pair in the provided list.
Final Answer:(A)