A nurse is reviewing the concepts of central sleep apnea with a colleague. Which of the following statements by the colleague indicates an understanding of central sleep apnea?

"Common causes of central sleep apnea are opioid overdose and congestive heart failure."

"Central sleep apnea is caused by obesity and an inactive tongue."

"Central sleep apnea is easily diagnosed using polysomnography."

"Central sleep apnea is related to the recurrent episodes of upper airway collapse and obstruction."