There are three blocks. We call them A, B and C. Block C is below and A is above B. Block A has one medium black square. Block B has one medium black square and a medium blue square. Below the medium blue square there is the medium black square. And block C has a medium yellow square. A medium black square is touching the bottom edge of this block. A medium blue square is also in this block. It is below the medium yellow square. Below the medium blue square and the medium yellow square there is the medium black square.
Which object is below a medium black square? the medium blue square that is in block B or the medium blue square which is in block C?
the medium blue square  that is in block B the medium blue square  which is in block C both of them none of them