Which statin is produced by the yeast and has been commercialized as a blood-cholesterol-lowering agent?

Which of the molecules listed below is a product of fermentation of glucose by yeast?

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

Microbes used for industrial production are grown in large vessels called ........

Yeast has been used for the commercial production of:
$I.$ Ethanol
$II.$ Bread
$III.$ Toddy drink
$IV.$ Biogas
Choose the correct option.

Fill in the blanks:
$(I)$ Ethanol is produced by $...a...$
$(II)$ Large scale production of beverages in industries is done in very large vessels called $...b...$
$(III)$ Penicillin was discovered by $...c...$
$(IV)$ $LAB$ checks disease-causing microbes in $...d...$
Which of the following options correctly identifies $a$ to $d$?