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
Enzyme levels which are decreased during starvationa) Fatty acid synthaseb) CoA carnitine transferasec) Citrate lyased) Lipoprotein lipasee) Tyrosine kinase 
Select and explain. 
A. ad, B. c, C. ac, D. ab
A: ad
Answer: A: ad 
Explanation: Activity of fatty acid synthase and lipoprotein lipase decrease during starvation.