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: Medicine
Which of the following is the true action of pralidoxime on cholinesterase enzyme? 
Select and explain. 
A. Promoting synthesis of cholinestrase, B. Promoting synthesis of acetyl choline, C. Reactivating cholinesterase enzyme, D. Direct action on cholinergic receptors
C: Reactivating cholinesterase enzyme
Answer: C: Reactivating cholinesterase enzyme 
Explanation: 2-PAM is effective in organophosphate poisoning but is contraindicated in carbamate poisoning.