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
Autocrine hormone among the following: 
Select and explain. 
A. Prostaglandins, B. Thromboxane A2., C. Both, D. None
C: Both
Answer: C: Both 
Explanation: They both are autocrine or paracrine hormones.