There are three blocks, A, B and C. There are two medium black squares in block A. Medium black square number one is below medium black square number two. Then, we have block B with one medium black square in it. Finally, we have block C to the left of block B and block A is to the right of it. It contains a medium blue square and one medium black square. The medium blue square is below the medium black square.
Which object is to the left of a medium black square? the medium black square that is in block B or the medium black square that is in block C?
the medium black square  that is in block B the medium black square  that is in block C both of them none of them