A 56-year-old woman comes to the physician for 2-day history of dysuria. She has a 20-year history of type II diabetes mellitus managed with insulin. BMI is 30. Temperature is 100.1 F. Physical examination shows decreased pinprick sensation on the lower extremities up to the knees. There is a small suprapubic enlargement. She is sent to hospital for catheter insertion and administration of antibiotics. At discharge, which of the following medications might be beneficial for this patient?
A) Bethanechol
B) Neostigmine
C) Oxybutynin
D) Pilocarpine
E) Ticlopidine

