This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General pathology, Subject name: Pathology
RET proto-oncogene is associated with 
Select and explain. 
A. MEN1, B. Medullary carcinoma of thyroid, C. Small cell carcinoma lung, D. Melanoma
B: Medullary carcinoma of thyroid
Answer: B: Medullary carcinoma of thyroid 
Explanation: None