This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Dermatitis Erythema, Subject name: Skin
Acanthosis nigricans is seen in: 
Select and explain. 
A. GIT cancer, B. Hypothyroidism, C. Diabetes, D. All of the above
D: All of the above
Answer: D: All of the above 
Explanation: Ans. d. All of the aboveMost common association of acanthosis nigricans is obesity