What is the mechanism by which activated protein C regulates coagulation?

A Inhibition of factor Xa
B Inhibition of factor VIIIa and factor Va ✓
C Activation of factor IX
D Activation of factor XII

Explanation

Activated protein C regulates coagulation by inhibiting factor VIIIa and factor Va, which are essential for the coagulation cascade.

Source

Guyton and Hall Textbook of Medical Physiology
Hematology Hematology: Coagulation Disorders Hematology: Coagulation Disorders Medium MEDICAL Confidence: high