Gelo is a newly hired nurse assigned in the Medical Ward. He is caring for a patient with altered respiratory function. Upon checking the patient's chart, there's an order to do Chest Physiotherapy (CPT). Nurse Gelo is aware that the indications for CPT include the following except:

A. Weak or ineffective cough
B. Evidence of retained pulmonary secretions
C. Ineffective breathing pattern
D. Focal lung opacity on chest X-ray consistent with mucous plugging and/or atelectasis