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