We have three blocks, A, B and C. Block A contains one medium blue square. A medium black square is touching the bottom edge of this block. This shape is below the medium blue square. Block B is to the left of block A. It contains two medium blue squares. Below medium blue square number two is medium blue square number one. One medium yellow square is also touching the bottom edge of this block. There is also a medium black square in this block. It is below medium blue square number two.. The medium yellow square is below the medium black square , medium blue square number two and medium blue square number one. Above block B there is block C. It contains a medium blue square.
Which object is to the left of a medium blue square? the medium black square that is in block B or the medium black square that is touching the bottom edge of a block?
the medium black square  that is in block B the medium black square  that is touching the bottom edge of a block  both of them none of them