This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Gastrointestinal tract, Subject name: Pharmacology
Drug used in the treatment of gastric ulcer due to H. pylori is: 
Select and explain. 
A. Anticholinergics, B. Carbenoxolone sodium, C. Bismuth sub citrate, D. Coicosteroid
C: Bismuth sub citrate
Answer: C: Bismuth sub citrate 
Explanation: Bismath taken as suspension it is thought to act by decreasing PG synthesis in the intestinal mucosa there by reducing cl secretion ESSENTIALS OF MEDICAL PHARMACOLOGY SEVENTH EDITION kD TRIPATHI Pg no.686