<prompt> Which of the following is true about medullary CA of thyroidAssociated with MET oncogeneElevated levels of Serum calcitoninSeen in MEN I syndromeMost common thyroid cancer  <response>: Answer- B. Elevated levels of Serum calcitoninIn Medullary carcinoma serum calcitonin is increased, whose function is to lower serum calcium levels.So hypocalcemia maybe found associated with MTC.Seen in MEN II A and BAssociated with RET Protooncogene 