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
All of the following are true about Glycopyrrcolate except 
Select and explain. 
A. It is a muscarine receptor antagonist, B. It decreases oropharyngeal secretions, C. It is a tertiary amine in structure, D. It is used as a preanesthetic medication
C: It is a tertiary amine in structure
Answer: C: It is a tertiary amine in structure 
Explanation: Glycopyrrolate is quartenary amine which can't cross BBB and hence carries no CNS side effects.