We have three blocks, A, B and C. Block A has one medium black square. Block B is below block A. It has a medium blue square and one medium yellow square. Below the medium yellow square and a medium black square there is the medium blue square. It is touching the bottom edge of this block. Below the medium yellow square is the medium black square. Below block B there is block C with one medium yellow square and a medium black square in it. The medium yellow square is below the medium black square.
Which object is below 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