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
Difference in transudate & exudate is that the former
has a: 
Select and explain. 
A. Low protein, B. Cloudy appearance, C. Increased specific gravity, D. High protein
A: Low protein
Answer: A: Low protein 
Explanation: None