The yeast ($Saccharomyces$ $cerevisiae$) is used for the industrial production of ..........

$S$ - Statement: The fermentation process of microbes is also used to produce certain vitamins.
$R$ - Reason: Riboflavin is produced by $Ashbya$ $gossypii$.

Which bacterium is used for the production of butyric acid?

Which organism is useful for producing a chemical that inhibits immunity during organ transplantation?

Which of the following fermented beverages will not be produced by the distillation of fermented broth?

Match the following columns and select the correct option.

Column-$I$	Column-$II$
$(a)$ Clostridium butylicum	$(i)$ Cyclosporin-$A$
$(b)$ Trichoderma polysporum	$(ii)$ Butyric Acid
$(c)$ Monascus purpureus	$(iii)$ Citric Acid
$(d)$ Aspergillus niger	$(iv)$ Blood cholesterol lowering agent

$(a)\quad(b)\quad(c)\quad(d)$