You Cut Your Finger,and After Putting Pressure on the Wound

You cut your finger,and after putting pressure on the wound for several minutes,you notice that it is still bleeding profusely.What may be the problem?

A) Platelets are not functioning properly, or there are too few to be effective.
B) Mast cells are not releasing their chemical messengers.
C) There are too many antigens to allow clotting.
D) Hemoglobin levels are too high to allow clotting.
E) Macrophages have not yet arrived at the wound site.