Which of the Following Is Correct Advice for a PTA

Which of the following is correct advice for a PTA to give a patient with a diagnosis of post-polio syndrome that is beginning an outpatient physical therapy intervention program?

A) The patient should exercise to the point of fatigue at the first visit.
B) The patient should stop exercise if pain or weakness increases.
C) The patient should focus on lower extremity aggressive exercise.
D) Functional exercises should be of maximal intensity.