By Week Two of a 3-Day-Per-Week Pulmonary Rehabilitation Program,a Patient

By week two of a 3-day-per-week pulmonary rehabilitation program,a patient with moderate chronic obstructive pulmonary dysfunction is performing 15 minutes of cycling exercise with a 1-minute rest period at the 7-minute time-point.The patient's perceived dyspnea rating during cycling exercise was 2.What is the BEST way to progress this patient's exercise program for week three?

A) Increase cycle duration to 20 minutes with elimination of the rest period.
B) Increase cycle duration to 40 minutes with elimination of the rest period.
C) Increase training frequency to five times per week.
D) Increase training intensity to a dyspnea rating of 5.