A Client with Myasthenia Gravis Is Prescribed Neostigmine

A client with myasthenia gravis is prescribed neostigmine.The client telephones to report severe abdominal pain for the last 4 hours.Which response by the nurse is the most appropriate?

A) "Increase your evening dose of medication.This should resolve your pain."
B) "This is a common side effect that should resolve when you have a bowel movement."
C) "You need to be evaluated immediately for a bowel obstruction."
D) "You are probably constipated.Take a laxative and return to the office in the morning."