The spleen consists of two different tissue types red pulp and white pulp. Red pulp, also called as splenic pulp, consists of blood and reticular fibers. This portion of the human spleen helps to filter the aged/damaged red blood cells. White pulp also called Malpighian bodies of the spleen or splenic lymphoid nodules refers to small nodules within the spleen that are rich in lymphocytes and help to fight infection. Those are the main functions of the spleen. The spleen does not have any endocrine function and does not secrete any hormones. So, the correct answer is option C.