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