Assertion: Prothrombinase enzyme act as antiheparin.
Reason: Heparin prevent coagulation of blood in blood vessels.
A. If both assertion and reason are true and the reason is a correct explanation of the assertion.
B. If both assertion and reason are true but reason is not a correct explanantion of the assertion.
C. If the assertion is true but reason is false.
D. If both the assertion and reason are false.
