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