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 will be elevated in the bloodstream about 4 hours after a fat-rich meal? 
Select and explain. 
A. Chylomicrons, B. Ketone bodies, C. VLDL, D. LDL
C: VLDL
Answer: C: VLDL 
Explanation: The clearance of chylomicrons from the blood is rapid, the half-time of disappearance being under 1 h in humans. The residual triacylglycerol, plus triacylglycerol newly synthesized in the liver are secreted in very low-density lipoprotein as a source of fuel for peripheral tissues. Ketone bodies and non-esterified fatty acids are elevated in fasting, not after a meal. Ref: Botham K.M., Mayes P.A. (2011). Chapter 25. Lipid Transpo & Storage. In D.A. Bender, K.M. Botham, P.A. Weil, P.J. Kennelly, R.K. Murray, V.W. Rodwell (Eds), Harper's Illustrated Biochemistry, 29e.