Under a given load, a clay layer attains 30% degree of consolidation in 100 days. The time taken by the same clay layer to attain 60% degree of consolidation will be

Under a given load, a clay layer attains 30% degree of consolidation i

1.	Under a given load, a clay layer attains 30% degree of consolidation in 100 days. The time taken by the same clay layer to attain 60% degree of consolidation will be
A.	1600 days
B.	800 days
C.	400 days
D.	200 days
Answer» D. 200 days