We have three blocks. We call them A, B and C. One medium yellow square and a medium blue square are in block A. Below the medium blue square there is the medium yellow square. To the right of block A we have block B. It has one medium yellow square. Below a medium black square there is a medium blue square. It is touching the bottom edge of this block. This object is below the medium yellow square which is below the medium black square. Finally, we have block C which is to the right of block A. It contains a medium blue square.
Which object is to the left of a medium blue square? the medium yellow square that is in block B or the medium yellow square that is in block A?
the medium yellow square  that is in block B the medium yellow square  that is in block A both of them none of them