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
Which of the following has least density? 
Select and explain. 
A. VLDL, B. LDL, C. HDL, D. Chylomicrons
D: Chylomicrons
Answer: D: Chylomicrons 
Explanation: Major Classes of Lipoproteins:
Based on ultracentrifugation, in the ascending order of density is

Chylomicrons (Least density)
Very Low Density Lipoproteins (VLDL)
Low Density Lipoproteins (LDL)
Caps-Intermediate density Lipoproteins (IDL)
High Density Lipoproteins (HDL)