We have three blocks, A, B and C. Block A has a medium blue square and a medium black square. The medium blue square is touching the bottom edge of this block. It is below the medium black square. Above block A there is block B which has a medium yellow square. Above block A there is block C with one medium blue square and one medium yellow square in it. The medium blue square is touching the bottom edge of this block. It is below the medium yellow square.
Which object is above a medium blue square? the medium yellow square that is in block B or the medium yellow square that is in block C?
the medium yellow square  that is in block B the medium yellow square  that is in block C both of them none of them