The production of vinegar from alcohol is caused by . . . . . . .

Neomycin is extracted from:

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

Yeast is used in the production of .......

Which of the following organic acids is produced by fermentation?

Assertion $A$: Fungi are used to ripen Roquefort cheese.
Reason $R$: $Propionibacterium$ $sharmanii$ is used for Swiss cheese.
Which option is correct for Assertion $A$ and Reason $R$?