We have three blocks. We call them A, B and C. Block A has a medium blue square and one medium black square. A medium yellow square is touching the bottom edge of this block. This shape is below the medium blue square and the medium black square. The medium blue square is below the medium black square. Above block A there is block B which has a medium yellow square and one medium black square. Below the medium black square is the medium yellow square. Below block B there is block C. It contains a medium yellow square and one medium black square. The medium yellow square is below the medium black square.
Which object is above a object that is touching the bottom edge of a block? 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