This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Disorders of pituitary gland, Subject name: Medicine
Which chromosome is involved in pathogenesis of MEN1? 
Select and explain. 
A. 10, B. 11, C. 12, D. 13
B: 11
Answer: B: 11 
Explanation: Chromosome aberrations in MEN MEN 1 11q13 MEN 2 10 ( RET proto-oncogene) MEN 3 10 ( RET Proto-oncogene) MEN 4 12p13