A nurse is preparing to perform a cranial nerve examination for a client. Which of the following actions should the nurse take to check cranial nerve XI?

A. Identifying specific smells checks cranial nerve I (olfactory). B. Checking visual acuity with a Snellen chart assesses cranial nerve II (optic). C. Observing for the ability to turn the head side to side tests cranial nerve XI (accessory), which controls the sternocleidomastoid and trapezius muscles responsible for head movement. D. Whispering in one ear while occluding the other tests cranial nerve VIII (vestibulocochlear).