A nurse is evaluating the effectiveness of a medication for a client taking cyclobenzaprine (Flexeril). Which of the following statements indicate that the medication is effective for the client?

A. Urinary symptoms such as urgency and frequency are not related to the therapeutic effects of cyclobenzaprine. B. Cyclobenzaprine is a muscle relaxant, and its effectiveness is indicated by a reduction in muscle rigidity and spasms, along with improved range of motion. C. Physical dependence is not a goal of treatment with cyclobenzaprine. The effectiveness of the medication should be measured by symptom relief, not dependence. D. Cyclobenzaprine does not affect respiratory function, so the absence of spontaneous respiratory movements in mechanically ventilated clients is unrelated to the medication's action.