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 the brownish coloured substance seen in hea failure cells? 
Select and explain. 
A. Hemosiderin, B. Lipofuscin, C. Myoglobin, D. Bilirubin
A: Hemosiderin
Answer: A: Hemosiderin 
Explanation: The brownish pigment seen in hea failure cells are hemosiderin. Hea failure cells are hemosiderin laden macrophages seen in the lung after development of congestion and pulmonary oedema. Lipofuscin are yellow brown pigment granules which are composed of lipid containing residues of lysosomal digestion. It is considered to be pigment of aging.