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