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
Hormone released during increased stress is: 
Select and explain. 
A. Cortisol, B. Thyroxine, C. Growth hormone, D. Somatostatin
A: Cortisol
Answer: A: Cortisol 
Explanation: None