There are three blocks. Lets call them A, B and C. One medium yellow square is in block A. Then, there is block B which has a medium blue square. A medium yellow square is also in this block. Below the medium yellow square there is the medium blue square. Finally, we have block C to the right of block A and block B is to the left of it. It contains a medium black square. This block also has a medium blue square. Below the medium blue square there is the medium black square.
Which object is below a medium yellow 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