There are three blocks, A, B and C. Block C is to the right of block B and below block A. Block A has a medium black square and one medium yellow square. The medium black square is below the medium yellow square. Block B has a medium yellow square and a medium blue square. The medium yellow square is below the medium blue square. And block C contains one medium black square.
Which object is to the left of a medium black 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