Which Assessment Finding Leads the Nurse to Conclude That Digital

Which assessment finding leads the nurse to conclude that digital disimpaction of stool is unsafe for the patient?

A) The patient has a large mass of hard,dry stool in the rectum.
B) The patient has not had a bowel movement for the last 6 days.
C) The patient's pulse is 50 beats/minute due to a history of heart block.
D) The patient has taken senna every morning for the last 3 days.