There are three blocks, A, B and C. Block B is above A. Block A is below C. Block A has one medium yellow square. Block B contains one medium black square and one medium blue square. The medium black square is touching the bottom edge of this block. This object is below the medium blue square. Block C has a medium blue square and one medium black square. The medium blue square is touching the bottom edge of this block. It is below the medium black square.
What is above the yellow object? a medium black square that is in block C or a medium black square that is touching the bottom edge of a block?
medium black square  that is in block C medium black square  that is touching the bottom edge of a block  both of them none of them