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.

• A
  $A$ and $R$ both are correct and $R$ is the correct explanation of $A$
• B
  $A$ is correct and $R$ is wrong
• C
  $A$ and $R$ both are correct and $R$ is not the correct explanation of $A$
• D
  $A$ is wrong and $R$ is correct