There are three blocks, A, B and C. Block A has a medium yellow square, a medium black square and one medium blue square. The medium black square is below the medium blue square. The medium yellow square is below the medium blue square and the medium black square. To the left of block A there is block B which has a medium black square and one medium yellow square. Below the medium yellow square there is the medium black square. Finally, there is block C to the left of block B. It contains a medium yellow square.
Which object is below a blue object? the medium black square that is in block A or the medium black square that is in block B?
the medium black square  that is in block A the medium black square  that is in block B both of them none of them