A 45-Year-Old Patient Reports a Recent Onset of Unilateral Shoulder

A 45-year-old patient reports a recent onset of unilateral shoulder pain which is described as diffuse and is associated with weakness of the shoulder but no loss of passive range of motion. What does the provider suspect as the cause of these symptoms?

A) Acromioclavicular joint disease
B) Cervical radicular pain
C) Glenohumeral arthritis
D) Rotator cuff injury