We have three blocks. Lets call them A, B and C. Block C is to the right of block B and above block A. Block A contains a medium yellow square. A medium blue square is touching the bottom edge of this block. It is below the medium yellow square. Block B contains a medium blue square and one medium black square. This block also has a medium yellow square. The medium blue square is touching the bottom edge of this block. Below the medium yellow square there is the medium black square. The medium blue square is below the medium yellow square and the medium black square. Block C has a 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