A)a bundle of tissue that contains the ductus deferens,blood vessels,nerves,and lymphatics that serve the testis. B)a narrow opening that links the scrotal chamber with the peritoneal cavity. C)the external marking of the boundary between the two chambers of the scrotum. D)a layer of smooth muscle in the skin of the scrotal sac. E)a dense layer of connective tissue that surrounds the testis.