Jaquay is treating a patient with chronic obstructive pulmonary disease (COPD) who complains of dyspnea during daily activities. The patient's SpO2 levels tend to drop below 88% with mild exertion. In addition to continuing with a general exercise program, which of the following interventions would be the MOST beneficial for this patient?

A. Instructing the patient in diaphragmatic breathing and pursed-lip breathing.

B. Encouraging the patient to hold their breath during activities to conserve oxygen.

C. Reducing the intensity of the exercise program to avoid any further dyspnea.

D. Training the patient in quick, shallow breathing to increase oxygen intake.

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