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: Medicine
Majority of the hormone levels will decrease with aging. Which of the following hormone does NOT obey this rule? 
Select and explain. 
A. Growth hormone, B. Prolactin, C. Testosterone, D. Aldosterone
B: Prolactin
Answer: B: Prolactin 
Explanation: Growth hormone, Testosterone, aldosterone will decrease with aging, but prolactin level increases with aging. Ref:Harrisons Principles of Internal Medicine, 18th Edition, Page 575