Question

Match the following

• A. A-IV, B-III, C-I, D-II
• B. A-III, B-IV, C-II, D-I
• C. A-IV, B-III, C-II, D-I
• D. A-III, B-IV, C-I, D-II

Hint:

Statins act by competitively inhibiting H-M-G-CoA reductase, the key enzyme in cholesterol biosynthesis.
This is a high-yield medical and biological mechanism frequently tested in competitive exams.

Answer 1

The Correct Option is C

Step 1: Anchor on two well known industrial fermentations.
Butyric acid is produced by anaerobic fermentation using Clostridium, and citric acid is produced commercially through Aspergillus niger fermentation.
Step 2: Filter the options with these two facts.
Keep only the option where the butyric acid item pairs with Clostridium and the citric acid item pairs with Aspergillus.
Step 3: Confirm the remaining two.
Cyclosporin-A is sourced from a fungus used in immunosuppressant drug production, and the last item completes the set by elimination.
Final answer: Option 3, A-IV, B-III, C-II, D-I.