The most common substrate used in distilleries for the production of ethanol is

Match the following bacteria/fungi of Column $I$ with their commercial products of Column $II$.

Column $I$	Column $II$
$A$. Lactobacillus	$p$. Butyric acid
$B$. Aspergillus niger	$q$. Acetic acid
$C$. Acetobacter aceti	$r$. Lactic acid
$D$. Clostridium butylicum	$s$. Citric acid

Select the code for the correct answer from the options given below.

Antibiotics are produced by

Beer is obtained by the fermentation of seeds of

Which statin is produced by the yeast and has been commercialized as a blood-cholesterol-lowering agent?

Match List-$I$ with List-$II$:

List-$I$	List-$II$
$(a)$ Aspergillus niger	$(i)$ Acetic Acid
$(b)$ Acetobacter aceti	$(ii)$ Lactic Acid
$(c)$ Clostridium butylicum	$(iii)$ Citric Acid
$(d)$ Lactobacillus	$(iv)$ Butyric Acid

Choose the correct answer from the options given below: