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: Pathology
Disease presenting as soft, velvety, verrucous, hyperpigmentation of axillae in an adult with adenocarcinoma stomach is: 
Select and explain. 
A. Pemphigus, B. Acanthosis, C. Pemphigoid, D. Contact dermatitis
B: Acanthosis
Answer: B: Acanthosis 
Explanation: Acanthosis