This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Anatomy
Thiamine acts as a cofactor in 
Select and explain. 
A. Pyruvate to oxalate, B. Malonate to oxaloacetate, C. Succinate to fumarate, D. Pyruvate to acetyl CoA
D: Pyruvate to acetyl CoA
Answer: D: Pyruvate to acetyl CoA 
Explanation: Thiamine as a cofactor in ReactionsEnzymesPyruvate - Acetyl CoAPyruvate dehydrogenasea-ketoglutarate - Succinyl CoAa-ketoglutarate dehydrogenaseErythrose-4-PO4 + Xylulose-5-PO4 - Fructose-6-PO4 + Glyceraldehyde-3-PO4TransketolaseBranched-chain amino acids - Branched chain keto acidsBranched-chain amino acid dehydrogenase(Refer: DM Vasudevan, Textbook of Biochemistry, 7th edition, pg no: 478)