You Are About to Enter a Patient's Room to Provide

You are about to enter a patient's room to provide exercises and bed mobility work after the person has had a transtibial amputation.This patient has a comorbidity of atrial fibrillation.You take the patient's resting pulse.At which of the following rates is it wise to avoid physical therapy activity until further medical consultation is received (the lowest rate at which you would defer physical therapy) ?

A) 80 beats per minute
B) 95 beats per minute
C) 115 beats per minute
D) 124 beats per minute