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