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: Biochemistry
Ochronosis is seen in: 
Select and explain. 
A. Alkaptonuria, B. Cystinosis, C. Maple syrup disease, D. Homocystinuria
A: Alkaptonuria
Answer: A: Alkaptonuria 
Explanation: Alkapton deposition occurs in connective tissues, bones and various organs (nose, ear etc.) resulting in ochronosis