With respect to the external abdominal oblique muscle or its aponeurosis, which of the following is NOT correct
A. The aponeurosis forms the superior wall of the inguinal canal
B. Its muscle fibers course medially from superior to inferior
C. The aponeuorosis participates in the formation of the rectus sheath
D. The superficial ring of the inguinal canal is an opening in the aponeurosis