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: Pathology
Medullary carcinoma of the thyroid is associated with which of the following syndrome - 
Select and explain. 
A. MEN I, B. MEN II, C. Fraumeni syndrome, D. Hashimoto's thyroiditis
B: MEN II
Answer: B: MEN II 
Explanation: None