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
Rate limiting enzyme in fatty acid synthesis ? 
Select and explain. 
A. PDH dehydrogenase, B. Malonyl reductase, C. Acetyl CoA carboxylase, D. Transacetylase
C: Acetyl CoA carboxylase
Answer: C: Acetyl CoA carboxylase 
Explanation: Ans. is 'c' i.e., Acetyl CoA carboxylase