Identify the blank spaces $A, B, C, D$ given in the following table and select the correct answer.

Types of Microbes	Scientific Name	Product	Medical Application
Fungus,$C$	$A$,Monascus purpureus	Cyclosporin $A$,Statin	$B$,$D$

• A
  $A-$Trichoderma polysporum,$B-$As an immunosuppressive agent in organ transplant patients,$C-$Yeast,$D-$as blood-cholesterol lowering agent
• B
  $A-$Trichoderma polysporum,$B-$As blood-cholesterol lowering agent,$C-$Protozoa,$D-$As an immunosuppressive agent in organ transplant patients
• C
  $A-$Clostridium butylicum,$B-$used as a clot-buster,$C-$Yeast,$D-$As blood-cholesterol agent
• D
  $A-$Clostridium butylicum,$B-$As blood-cholesterol lowering agent,$C-$Yeast,$D-$used as a clot-buster