There are three blocks. Lets call them A, B and C. One medium yellow square and one medium blue square are in block A. Below the medium blue square and a medium black square is the medium yellow square. It is touching the bottom edge of this block. The medium blue square is below the medium black square. Then, we have block B with one medium black square in it. There is also one medium yellow square touching the bottom edge of this block. The medium yellow square is below the medium black square. Block C is below block B and to the right of block A. It has a medium black square.
Which object is to the left of a medium black square? the medium black square which is in block A or the medium black square that is in block B?
the medium black square  which is in block A the medium black square  that is in block B both of them none of them