There are three blocks. We call them A, B and C. Blocks B and A are to the right of C. Block A has one medium yellow square. Block B has a medium yellow square and one medium black square. The medium yellow square is below the medium black square. Block C contains three medium blue squares. This block also contains a medium yellow square. This shape is below medium blue square number three. Medium blue square number two is below medium blue square number three. Below the medium yellow square , medium blue square number three and medium blue square number two is medium blue square number one.
Which object is to the left of a medium yellow square? medium blue square number two or medium blue square number three?
medium blue square  number two medium blue square  number three both of them none of them