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
Antidote of choice for organophosphate and carbamate poisoning is: 
Select and explain. 
A. Physostigmine., B. Atropine., C. Tacrine., D. Rivastigmine.
B: Atropine.
Answer: B: Atropine. 
Explanation: Atropine is an antidote of choice for both organophosphate and carbamate poisoning.