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: Unknown
The substance that accumulates in cardiacmyxoma is – 
Select and explain. 
A. Mucopolysaccharides, B. Sialo mucin, C. Gelatin, D. Glycoprotein
A: Mucopolysaccharides
Answer: A: Mucopolysaccharides 
Explanation: - Myxomasare composed of stellate or globular myxoma (lepidic cell, endothelial cells, smooth muscle cells and undifferentiated cells embedded within abundant acid mucopolysaccharidesusbstance.