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: Medicine
Sipple syndrome is also known as:- 
Select and explain. 
A. MEN 1, B. MEN 2a, C. MEN 26, D. None of the Above
B: MEN 2a
Answer: B: MEN 2a 
Explanation: Answer is B (MEN 2a): Sipple syndrome refers to MEN Type-HA