This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Parathyroid and adrenal glands, Subject name: Surgery
An infant is diagnosed with MEN-2B trait. Which the following will be best line of management? 
Select and explain. 
A. Prophylactic surgery, B. Clinical observation and follow up, C. Regular FNAC, D. All of the above
A: Prophylactic surgery
Answer: A: Prophylactic surgery 
Explanation: Prophylactic Thyroidectomy in RET Mutation Carriers MEN-2A Before 5 years MEN-2B Before 1 year