There are three blocks. We call them A, B and C. Block A is to the left of blocks B and C. Block A contains one medium yellow square. A medium blue square is touching the bottom edge of this block. It is below the medium yellow square. Block B has one medium black square and a medium blue square. The medium black square is below the medium blue square. And block C has two medium blue squares and two other medium yellow squares. Below medium yellow square number two , medium blue square number two and medium yellow square number one is medium blue square number one. Below medium yellow square number one and medium yellow square number two is medium blue square number two.
Which object is to the left of a medium blue square? the medium yellow square which is in block A or medium yellow square number one?
the medium yellow square  which is in block A medium yellow square  number one both of them none of them