3.  Consider the following statements regarding isotropic consolidation of clays1. Consolidation in the triaxial apparatus under equal all-round pressure is known as isotropic, consolidation2. The maximum value oteffective stress in the past divided by the present value is known as the over consolidation ratio (OCR)3. A normally consolidated clay has an over consolidation ratio greater than unity.4. An over consolidated clay has an over consolidation ratio of unity.Of these statements: