A 4 year old boy falls on a rusty nail and punctues his skin. The wound is cleaned and covered with sterile gauze. Which of the following is the initial events in the healing process?

Formation of fibrin a firbrin clot

Depostion of proteoglycans and collagen

Macrophage-mediated phagocytosis of cellular debris

Accumulation of acute inflammatory cells

Differentiation and migration of myofibroblasts