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: Social & Preventive Medicine
38 years old man looking Jaundiced presented in emergency with bruises and hematuria. History revealed that he was having cholestatic Jaundice leading to vitamin K deficiency which had ultimately resulted in markedly decreased 
Select and explain. 
A. Platelet derived growth factors, B. Serotonin, C. Arachidonic acid, D. Prothrombin
D: Prothrombin
Answer: D: Prothrombin 
Explanation: None