A client has been prescribed zolpidem (Ambien) for insomnia. The client's spouse reports that the patient drives at night but does not remember it in the morning. Which of the following explains this behavior?

A. Zolpidem can cause complex sleep behaviors like sleep-driving, and this side effect does not necessarily resolve after 2 weeks. B. Zolpidem can lead to complex sleep behaviors, including sleep-driving, with associated memory loss. C. Severe allergic reactions are not typically associated with memory loss and sleep-driving. D. Toxic levels would present with more severe symptoms and are less likely to be solely characterized by sleep-driving.