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
A drug 'X' belongs to the anticholinergic drug group. It is primarily used in pre anesthetic medication and also during surgery. Which of the following can be 'X' ? 
Select and explain. 
A. Glycopyrrolate, B. Pipenzolate methyl bromide, C. Isopropamide, D. Dicyclomine
A: Glycopyrrolate
Answer: A: Glycopyrrolate 
Explanation: None