The vitamin K dependent protein C and S are characterised by their ability to inactivate factor:
8a and 5a
7a and 5b
3a and 3b
All of the above
Sequence of Events Involved in the Activation of Plasminogen

During intravascular clotting, the endothelium of the blood vessel secretes a thrombin-binding protein, the thrombomodulin. It is secreted by the endothelium of all the blood vessels, except the minute vessels of brain.
Thrombomodulin combines with thrombin and forms a thrombomodulin-thrombin complex.
Thrombomodulin-thrombin  complex  activates protein C.
Activated protein C inactivates factor V and VIII in the presence of a cofactor called protein S.
Protein C also inactivates the t-PA inhibitor.
Now, the t-PA becomes active.
Activated t-PA and lysosomal enzymes activate plasminogen to form plasmin. Plasminogen is also activated by thrombin and u-PA.