A concentrated load acting on the surface of a soil produces a stress of 19.1 kPa at a depth of 1 m below it. Using Boussinesq's expression, the stress at 2 m depth is

A concentrated load acting on the surface of a soil produces a stress

1.	A concentrated load acting on the surface of a soil produces a stress of 19.1 kPa at a depth of 1 m below it. Using Boussinesq's expression, the stress at 2 m depth is
A.	9.55 kPa
B.	6.37 kPa
C.	4.775 kPa
D.	4.37 kPa
Answer» D. 4.37 kPa