The nurse is assessing a client who reports using cocaine several times in the past week. Which observations should the nurse expect on assessment?

A. Cocaine use typically results in stimulation of the central nervous system, leading to increased heart rate, dilated pupils, and heightened alertness. B. Cocaine use is associated with tachycardia (increased heart rate) rather than bradycardia, and it usually increases respiratory rate rather than causing bradypnea. C. Hallucinations and delusions are not typical effects of cocaine use; instead, they may occur with substances like hallucinogens or certain psychotic disorders. D. Lethargy and depression are more commonly associated with the "crash" or comedown phase after cocaine use, rather than immediate effects of ingestion.