What is Rennet used for?

Identify the fungus from the following options.

$A$: Fermentation stops when the alcohol concentration in a sugar solution reaches about $13 \%$.
$R$: $Saccharomyces \ cerevisiae$ are killed by the high concentration of alcohol,and zymase activity is inhibited.

$Monascus$ $purpureus$ is a yeast used commercially in the production of:

Cyclosporin $A$, used as an immunosuppressive agent, is produced from:

Name any two industrially important enzymes.