The total stress paths corresponding to different loading conditions, for a soil specimen under the isotropically consolidated stress state (O), are shown below :Stress PathLoading ConditionOPI-Compression loading (σ1 - increasing ; σ3 - constant)OQII - Compression unloading (σ1 - constant; σ3 - decreasing)ORIII - Extension unloading (σ1 - decreasing; σ3 constant)OSIV - Extension loading (σ1 - constant; σ3 - increasing) The correct match between the stress path and the listed loading conditions is

• A. OP - I, OQ - II, OR - IV, OS - III
• B. OP - IV, OQ - III, OR - I, OS - II
• C. OP - III, OQ - II, OR - I, OS - IV
• D. OP - I, OQ - III, OR - II, OS - IV