What is the primary mechanism by which protein C inhibits coagulation?

A By inactivating factor Xa
B By inactivating factor Va ✓
C By activating antithrombin III
D By inhibiting tissue factor pathway

Explanation

Protein C is a vitamin K-dependent serine protease that inhibits coagulation by inactivating factor Va and factor VIIIa.

Source

Harrison's Principles of Internal Medicine
Hematology Hematology: Coagulation Disorders Hematology: Coagulation Disorders Medium MEDICAL Confidence: high