Identify the blank spaces A,B,C and D in the following table and select the correct answer
Channel: Doubtnut
Date: 2020-08-30

Identify the blank spaces A,B,C and D in the following table and select the correct answer.  `{:("Type of microbe","Scientific name","Commercial product"),("Bacterium",A,"Streptokinase"),(B,"Aspergillus niger","Citric acid"),("Fungus","Trichonderma polysporum",C),("Bacterium",D,"Butyric acid"):}`