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: Pathology
To prevent excessive bleeding during surgery a patient
with hemophilia A may be given: 
Select and explain. 
A. Whole blood, B. Fresh frozen plasma, C. Factor VIII concentrate, D. Factor IX concentrate
C: Factor VIII concentrate
Answer: C: Factor VIII concentrate 
Explanation: None