There are three blocks, A, B and C. Block A contains one medium blue square. This block also has one medium yellow square. This block also contains a big yellow square. It is to the right of the medium yellow square. The medium blue square is below and to the right of the medium yellow square. Then, there is block B with one medium yellow square in it. To the right of both blocks A and B there is block C which contains a medium blue 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 which is in block A?
the medium yellow square  which is in block B the medium yellow square  which is in block A both of them none of them