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
A 5 year old child presents with confusion, increased salivation, lacrimation, fasciculations, miosis, tachycardia and hypeension. Which of the following poisons can cause these manifestation? 
Select and explain. 
A. Opium, B. Organophosphate insecticide, C. Dhatura, D. Organoch I orine pesticide
B: Organophosphate insecticide
Answer: B: Organophosphate insecticide 
Explanation: B i.e. Organophosphorus insectiside