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
Proto-Oncogene associated with Familial Medullary thyroid carcinoma is 
Select and explain. 
A. KRAS, B. BRAF, C. RET, D. KIT
C: RET
Answer: C: RET 
Explanation: Proto-OncogeneAssociated tumorKRASColon, lung, and pancreatic tumorsBRAFMelanomas, leukemias, colon carcinoma, othersRETMultiple endocrine neoplasia 2A and B, Familial medullary thyroid carcinomasKITGastrointestinal stromal tumors, seminomas, leukemiasRef: Robbins and Cotran Pathologic Basis of Disease; 9th edition; Chapter 7; Neoplasia; Page no: 184; Table no: 7-5