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