The total & effective stress at a depth of 5m below the top level of water in swimming pool are respectively:
AZero & zero
B0.5 kg/cm^2 & zero
C0.5 kg/cm^2 & 0.5kg/cm^2
D1 kg/cm^2 & 0.5kg/cm^2

AZero & zero
B0.5 kg/cm^2 & zero
C0.5 kg/cm^2 & 0.5kg/cm^2
D1 kg/cm^2 & 0.5kg/cm^2