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