Which organism is indirectly useful for patients who have undergone organ transplantation?

Match the columns :

Column-$I$	Column-$II$
$(a)$ Statin	$(1)$ To remove oily stains
$(b)$ Cyclosporin $A$	$(2)$ To break blood clot
$(c)$ Streptokinase	$(3)$ To decrease cholesterol in blood
$(d)$ Lipase	$(4)$ Component to reduce blood immunity

The first vitamin to be produced through a fermentation process using a wild bacterium was

Which of the following substrates is used in the formation of alcohol?

Assertion $(A)$: The statin produced by the yeast $Monascus$ $purpureus$ lowers blood cholesterol.
Reason $(R)$: Statins act by competitively inhibiting the enzyme responsible for the synthesis of cholesterol.

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