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
Hormones with increased production during the day and less in nights is/are: 
Select and explain. 
A. ACTH., B. Cortisol, C. Insulin, D. All of the above.
D: All of the above.
Answer: D: All of the above. 
Explanation: None