A Patient with Moderate Lung Disease Would Be Anticipated to Demonstrate

A patient with moderate lung disease would be anticipated to demonstrate which of the following ventilatory responses to exercise?

A) Patient will become short of breath with usual daily activities and walking pace of 3 to 4 METs.
B) Patient will have shortness of breath only with relatively heavy exercise.
C) Patient will be restricted by symptoms of shortness of breath during most daily activities.
D) Patient may require intermittent or continuous oxygen with activity.