your friend is walking on the beach barefoot and cuts his foot on something sharp hidden in the sand. at home, he washes the foot and puts on an adhesive bandage over the cut. the next day the area around the cut is swollen, red, and hot. what is the cause of the heat in the area? group of answer choices a) entry of fluid and cells into the connective tissues of the foot b) a bacterial infection in the open cut in his foot c) increased blood flow rushing to the area of the cut in his foot d) destruction of epithelial tissue cells in the area of the cut