We have three blocks, A, B and C. Block A is to the right of and B is to the left of C. Block A contains one medium blue square. A medium black square is below the medium blue square. Block B contains a medium yellow square. And block C contains two medium black squares. It also has a medium yellow square. It is below medium black square number two. Medium black square number one is below medium black square number two and the medium yellow square.
Which object is to the left of a medium black square? the medium yellow square that is in block B or the medium yellow square which is in block C?
the medium yellow square  that is in block B the medium yellow square  which is in block C both of them none of them