There are three blocks. We call them A, B and C. Block B is to the right of blocks A and C. Block A has a medium yellow square. Block B contains a medium black square. Below a medium yellow square there is the medium black square. And block C has two medium yellow squares. 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