Q. A normally consolidated clay settled 10 mm when effective stress was increased from 100 kN/m² to 200 kN/m². If the effective stress is further increased from 200 kN/m² to 400 kN/m², then the settlement of the same clay is

• (A) 10 mm
• (B) 20 mm
• (C) 40 mm
• (D) None of the above