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