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 the following effects is unlikely to occur during treatment with imipramine ? 
Select and explain. 
A. Elevation of seizure threshold, B. Mydriasis, C. Sedation, D. Urinary retention
A: Elevation of seizure threshold
Answer: A: Elevation of seizure threshold 
Explanation: None