This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pharmacology
Antiulcer drug is - 
Select and explain. 
A. Pirenzepine, B. Methylcellulose, C. Ciprofloxacin, D. Pyrimethamine
A: Pirenzepine
Answer: A: Pirenzepine 
Explanation: Ans. is 'a' i.e., Pirenzepine Pirenzepine is a selective M1 anti-cholinergic & usual doses inhibit acid secretion by 40-50%.