Hypercoagulable factor is?

Hypercoagulable factor is?
a) Protein C
b) Protein S
c) Factor V Leiden
d) Antithrombin III
Correct Answer - C
Ans. C. Factor V Leiden
[Ref Textbook of clinical hematology p. 786]
Factor V Leiden is the most common inherited hypercoagulable
Occurs when a specific mutation in a protein that is more resistant to
be turned off, leading to an increased risk of thrombosis