This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General Surgery, Subject name: Surgery
All of the given below statements regarding medullary carcinoma of thyroid are true except: 
Select and explain. 
A. It arises from 'C' cells, B. Both hematogenous & lymphatic spread is seen ., C. It is dependent on TSH, D. Most case are sporadic
C: It is dependent on TSH
Answer: C: It is dependent on TSH 
Explanation: MEDULLARY CARCINOMA IS NOT DEPENDENT ON TSH