An embankment is to be constructed with a granular soil (bulk unit weight $=20 \mathrm{kN} / \mathrm{m}^{3}$ ) on a saturated clayey silt deposit (undrained shear strength $=25 \mathrm{kPa}$ ). Assuming undrained general shear failure and bearing capacity factor of $5.7,$ the maximum height (in $\mathrm{m}$ ) of the embankment at the point of failure is
(A) 7.1
(B) 5.0
(C) 4.5
(D) 2.5
An embankment is to be constructed with a granular soil (bulk unit weight $=20 \mathrm{kN} / \mathrm{m}^{3}$ ) on a saturated clayey silt deposit (undrained shear strength $=25 \mathrm{kPa}$ ). Assuming undrained general shear failure and bearing capacity factor of $5.7,$ the maximum height (in $\mathrm{m}$ ) of the embankment at the point of failure is
(A) 7.1
(B) 5.0
(C) 4.5
(D) 2.5