Which patient below is MOST at risk for developing a cholinergic crisis?

A. A patient with myasthenia gravis is who is not receiving sufficient amounts of their anticholinesterase medication.

B. A patient with myasthenia gravis who reports not taking the medication Pyridostigmine for 2 weeks.

C. A patient with myasthenia gravis who is experiencing a respiratory infection and recently had left hip surgery.

D. A patient with myasthenia gravis who reports taking too much of their anticholinesterase medication.