In a purely cohesive soil, the critical centre lies at the intersection of
(A) Perpendicular bisector of slope and the locus of the centre
(B) Perpendicular drawn at 1/3rd slope from toe and the locus of the centre
(C) Perpendicular drawn at 2/3rd slope from toe and the locus of the centre
(D) Directional angles
(A) Perpendicular bisector of slope and the locus of the centre
(B) Perpendicular drawn at 1/3rd slope from toe and the locus of the centre
(C) Perpendicular drawn at 2/3rd slope from toe and the locus of the centre
(D) Directional angles