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
The only part of an odd chain fatty acid that is glucogenic: 
Select and explain. 
A. Propionyl CoA, B. Acetyl CoA, C. Malonyl CoA, D. Acyl CoA
A: Propionyl CoA
Answer: A: Propionyl CoA 
Explanation: Fatty acids with an odd number of carbon atoms are oxidized by  the  pathway  of  β-oxidation  described above producing acetyl CoA until a three-carbon (propionyl-CoA) residue remains. This compound is converted to succinyl-CoA, a constituent of the citric acid cycle. Hence, the propionyl residue from an odd-chain fatty acid is the only part of a fatty acid that is glucogenic.
HARPERS ILLUSTRATED BIOCHEMISTRY30th ed page no.225