This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Physiology
About paradoxical sleep. True is: 
Select and explain. 
A. Prominent beta waves, B. Prominent alpha waves, C. Also known as NREM sleep, D. Low amplitude, mixed frequency waves.
D: Low amplitude, mixed frequency waves.
Answer: D: Low amplitude, mixed frequency waves. 
Explanation: D i.e. Low amplitude, mixed frequency wave