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