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: Dental
Which of the following hormone in pregnancy is more associated blood vessels and increased permeability 
Select and explain. 
A. Estrogen, B. Prolactin, C. Testosterone, D. Progesterone
D: Progesterone
Answer: D: Progesterone 
Explanation: None