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