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
Which of the following is known as wear and tear pigment? 
Select and explain. 
A. Lipochrome, B. Cytochrome, C. Lipoxin, D. Lipoprotein
A: Lipochrome
Answer: A: Lipochrome 
Explanation: Lipofuscin is known as lipochrome. It is wear and tear pigment / aging pigment. It is a sure sign of free radical injury.