HELP MEEE PLIS I WILL GIVE U MORE POINTS 13) Mature soil is composed of three layers, the uppermost being topsoil. Jamal is planting a bush that needs a hole 18 centimeters deep for the roots. The instructions suggest an additional 8 centimeters depth for a cushion. If Jamal wants to add even more cushion, and the topsoil in his yard is 30 centimeters deep, how much more cushion can he add and still remain in the topsoil layer? A. no more than 12 cm B. more than 12 cm C. more than 4 cm D. no more than 4 cm