During an assessment of the CNs, the nurse finds the following: asymmetry when the patient smiles or frowns, uneven lifting of the eyebrows, sagging of the lower eyelids, and escape of air when the nurse presses against the right puffed cheek. This would indicate dysfunction of which of these CNs?

A. The trochlear nerve controls the superior oblique muscle of the eye and is not related to facial movements. B. The abducens nerve controls the lateral rectus muscle of the eye, responsible for eye movement, not facial muscles. C. The vagus nerve affects the soft palate, pharynx, and larynx, but does not contribute to facial expression. D. Asymmetry in facial movements, like smiling, frowning, and puffing the cheeks, suggests dysfunction of the facial nerve (CN VII).