We have three blocks, A, B and C. Block A is below C. Block C is below B. Block A has a medium yellow square. Block B has one medium yellow square and one medium black square. The medium yellow square is below the medium black square. And block C has one medium blue square. This block also has a medium black square. Below the medium black square there is the medium blue square.
Which object is above a medium yellow 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