There are three blocks, A, B and C. Block A is below block B and to the right of block C. Block A contains one medium blue square. Block B contains a medium yellow square. And block C contains a medium black square, one medium blue square and one medium yellow square. The medium black square is below the medium blue square and the medium yellow square. The medium blue square is below the medium yellow square.
Which object is to the left of a medium blue square? the medium yellow square which is in block B or the medium yellow square that is in block C?
the medium yellow square  which is in block B the medium yellow square  that is in block C both of them none of them