We have three blocks. We call them A, B and C. One medium black square is in block A. Above block A we have block B. It contains one medium yellow square. To the left of block A there is block C. It has two medium blue squares. Below medium blue square number two and a medium yellow square there is medium blue square number one. Below the medium yellow square there is medium blue square number two.
What is to the left of the black object? a medium yellow square that is in block B or a medium yellow square that is in block C?
medium yellow square  that is in block B medium yellow square  that is in block C both of them none of them