There are three blocks, A, B and C. A medium black square is in block A. Below block A we have block B which contains a medium yellow square and one medium blue square. The medium yellow square is below the medium blue square. Above block A there is block C. It has two medium black squares. One medium yellow square is also in this block. It is below medium black square number two. This block also has one medium blue square. It is below medium black square number two. Medium black square number one is touching the bottom edge of this block. It is below medium black square number two , the medium yellow square and the medium blue square.
Which object is above a medium black square? the medium yellow square that is in block B or the medium yellow square that is in block C?
the medium yellow square  that is in block B the medium yellow square  that is in block C both of them none of them