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 does not affect growth? 
Select and explain. 
A. Oxytocin, B. Somatotropins, C. Thyroid hormone, D. Estrogen
A: Oxytocin
Answer: A: Oxytocin 
Explanation: None