This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: FMGE 2017, Subject name: Physiology
Vitamin K leads to? 
Select and explain. 
A. g-carboxylation of aspaic acid residues to clotting factor 2,7,9 and 10, B. b-carboxylation of glutamic acid residues to clotting factor 2,7,9 and 10, C. alpha - carboxylation of asparatic acid residues to clotting factor 2,7,9 and 10, D. g-carboxylation of glutamic acid residues to clotting factor 2,7,9 and 10
D: g-carboxylation of glutamic acid residues to clotting factor 2,7,9 and 10
Answer: D: g-carboxylation of glutamic acid residues to clotting factor 2,7,9 and 10 
Explanation: Vitamin K leads to g-carboxylation of glutamic acid residues to clotting factor 2,7,9 and 10 Vitamin K is essential for adding carboxyl group to glutamic acid residues on 5 impoant clotting factors 1. Prothrombin (II) 2. Factor VII 3. Factor IX 4. Factor X 5. Protein C