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