This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Diabetes Mellitus, Subject name: Medicine
Which is not associated with diabetes mellitus? 
Select and explain. 
A. Cushing syndrome, B. Acromegaly, C. Hypothyroidism, D. Phaeochromocytoma
C: Hypothyroidism
Answer: C: Hypothyroidism 
Explanation: Coisol, growth hormone and catecholamines increase the blood sugar levels leading to impaired glucose tolerance or diabetes mellitus. whereas hypothyroidism is not associated with the blood sugar levels or diabetes mellitus