All the Following Statements About the Rectus Abdominis Muscle Are

All the following statements about the rectus abdominis muscle are TRUE EXCEPT:

A) it lies on either side of the linea alba
B) it originates from the outer surface of the superior pubic ramus
C) it inserts into the costal cartilage of ribs V, VI and VII
D) it is covered along its entire length posteriorly by the posterior rectus sheath
E) the semilunar line defines its lateral margin