A therapist completes an isokinetic evaluation of a 18 year-old male rehabilitating from a medial meniscectomy. The therapist notes that the patient produces 140 ft/lbs of force in the uninvolved quadriceps at 60 degrees per second. Assuming a normal ration of hamstrings to quadriceps strength, which of the following would be an acceptable hamstrings reading at 60 degrees per second?
A. 64 ft/lbs B. 84 ft/lbs C. 114 ft/lbs D. 154 ft/lbs