The thickness of base slab of a retaining wall generally provided, is

The thickness of base slab of a retaining wall generally provided, is

(A) One half of the width of the stem at the bottom

(B) One-third of the width of the stem at the bottom

(C) One fourth of the width of the steam at the bottom

(D) Width of the stem at the bottom

The correct Answer Is
(D) Width of the stem at the bottom