You are chopping vegetables to make dinner and accidentally cut your finger. What is the first thing that happens to the injured blood vessels in your finger?

a$.$ Platelets change shape and adhere to the site of injury

b$.$ Thrombin is activated so that plasmin can be activated to prevent excess clot formation

c$.$ Fibrin starts polymerizing to form a provisional matrix on which endothelial cells can migrate to fill the gap.

d$.$ There is a reflex vasoconstriction and endothelin is released from endothelial cell