We have three blocks, A, B and C. There is one medium black square in block A. Then, there is block B with two medium black squares in it. Below a medium yellow square is medium black square number one. This object is below medium black square number two which is below the medium yellow square. Finally, we have block C which is to the right of block A and below block B. It contains a medium blue square.
What is to the left of the blue thing? a medium yellow square or a medium black square?
medium yellow square  medium black square  both of them none of them