When anchoring AM–2 matting, make the anchor ditch
a. 24 to 48 inches deep and cut it at a 30°to 45°angle.
b. 48 to 60 inches deep and cut it at a 45°to 60 °angle.
c. 18 to 24 inches deep and cut it at a 45°to 60°angle.
d. 18 to 24 inches deep and cut it at a 15°to 30°angle