What is obtained from yeast?

Trichoderma polysporum is a source of

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 $R$?

$S$ - Statement: Statins are used to lower blood cholesterol levels.
$R$ - Reason: Statins are produced by the yeast $Monascus$ $purpureus$.

Which of the following microorganisms is responsible for the production of citric acid?

Name any two species of fungus, which are used in the production of antibiotics.