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: Pharmacology
Which of the following group of antidiabetic drugs are contraindicated in patient with MEN syndrome? 
Select and explain. 
A. Biguanides, B. GLP - 1 analogues, C. α - glucosidase inhibitors, D. Meglitinides
B: GLP - 1 analogues
Answer: B: GLP - 1 analogues 
Explanation: GLP 1 analogues can lead to medullary carcinoma of thyroid and hence they are contraindicated in patients with MEN syndrome.