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: Forensic Medicine
The active principles of Dhatura are all of the following except - 
Select and explain. 
A. Pyricatechol, B. Hyoscyamine, C. Atropine, D. Hyoscine
A: Pyricatechol
Answer: A: Pyricatechol 
Explanation: Active principles of dhatura are levo-hyoscyamine, hyoscine (scopolamine) and atropine.