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
Which of the following properties make pyridostigmine different from neostigmine ? 
Select and explain. 
A. It is more potent, B. It is longer acting, C. It produces less muscarinic side effects, D. It does not have any direct action on NM receptors
B: It is longer acting
Answer: B: It is longer acting 
Explanation: Though less potent than Neostigmine, Pyridostigmine has longer duration of action (3 to 6 hrs)
Duration of action of neostigmine is 0.5 to 2 hrs.