We have three blocks, A, B and C. Block B is below block C and above block A. Block A contains a medium blue square and one medium yellow square. The medium blue square is below the medium yellow square. Block B has one medium black square and a medium yellow square. The medium black square is below the medium yellow square. Block C has two medium black squares. This block also has one medium blue square. Below medium black square number two there is the medium blue square. Below medium black square number two there is medium black square number one. The medium blue square is below medium black square number one.
Which object is below a medium black square? the medium yellow square that is in block B or the medium yellow square which is in block A?
the medium yellow square  that is in block B the medium yellow square  which is in block A both of them none of them