The best answer I can give, as someone who is not in the nursing field, is that there will be a reduction in blood flow to the medial tarsal artery, or answer C. This is because the knife entered in the dorsum and is pretty close to the ankle.
The medial tarsal artery runs right through that part of the foot, and if it’s cut, the blood won’t flow further down the artery. You may see some spurting action if the wound is not properly cauterized or clotted to stop the bleeding.
Again, it’s an artery that has been cut, so the blood is still pumping through the body because of the heart. As it hits that area, it cannot finish the round and it spurts out of the artery.