Calculate the factor of safety at the point of maximum shear if unit shearing resistance is 97.9 kN/m2 and the maximum shear-stress induced is 55.72 kN/m2. Check whether the dam is safe or unsafe.

Calculate the factor of safety at the point of maximum shear if unit s

1.	Calculate the factor of safety at the point of maximum shear if unit shearing resistance is 97.9 kN/m² and the maximum shear-stress induced is 55.72 kN/m². Check whether the dam is safe or unsafe.
A.	F.O.S = 1.93 and safe
B.	F.O.S = 1.75 and unsafe
C.	F.O.S = 0.569 and safe
D.	F.O.S = 1.75 and safe
Answer» E.