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
which of this following can be used as a pre-anaesthetic medication to decrease the secretions and reflux bronchospasm during general anaesthesia: 
Select and explain. 
A. Ipratropium., B. Tiotropium., C. Glycopyrrolate., D. Atropine
C: Glycopyrrolate.
Answer: C: Glycopyrrolate. 
Explanation: None