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
Which  of  the  following  hormones  is an example of a peptide hormone? 
Select and explain. 
A. Parathormone, B. Adrenaline, C. Cortisol, D. Thyroxine
A: Parathormone
Answer: A: Parathormone 
Explanation: None