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: Surgery
Which of these statements is false about medullary carcinoma? 
Select and explain. 
A. Calcitonin is tumor marker, B. Arises from neural crest, C. Associate with MEN 1 syndrome, D. Diarrhoea is predominant
C: Associate with MEN 1 syndrome
Answer: C: Associate with MEN 1 syndrome 
Explanation: None