Match the Definition with the Term

Match the definition with the term.
-ego

A) the system that conveys information about external reality to the psyche
B) the part of the psyche that contains unconscious,powerful impulses and energies from the instincts
C) the part of the psyche that creates moral demands,arising independently of in-stincts and external reality alike
D) the part of the psyche that mediates conflicts that arise between instincts,external reality,and moral demands