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
All of the following are deliriant poisons, EXCEPT: 
Select and explain. 
A. Cannabis, B. Belladonna, C. Dhatura, D. Aconite
D: Aconite
Answer: D: Aconite 
Explanation: Dhatura, Cannabis, and Belladonna are deliriant poisons. Aconite is a cardiac poison. Hypotension, cardiac arrhythmia with AV block occurs. At first there is tachycardia, but in later stages bradycardia occurs due to AV block. Ref: The Essentials of Forensic Medicine and Toxicology by KS Narayan Reddy, 27th edition, Page 551-552.