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: Medicine
Which is most likely to be increased in Vit K deficiency - 
Select and explain. 
A. P. T. T., B. P.T., C. Platelet count, D. Fibrinogen time
B: P.T.
Answer: B: P.T. 
Explanation: None