This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Autonomic nervous system, Subject name: Pharmacology
Telenzepine acts on which receptors? 
Select and explain. 
A. M2, B. M1, C. M3, D. Nm
B: M1
Answer: B: M1 
Explanation: Pirenzepine and telenzepine are selective m1 blockers used in peptic ulcer by inhibiting acid secretion are synthetic atropine substitutes Ref: KDT 6th ed pg 113