There are three blocks, A, B and C. Block A is below B and block B is below C. Block A contains a medium black square. Block B has one medium blue square and one medium yellow square. The medium blue square is touching the bottom edge of this block. This shape is below the medium yellow square. And block C contains one medium black square and a medium yellow square. The medium black square is touching the bottom edge of this block. It is below the medium yellow square.
Which object is below a medium black square? the medium yellow square that is in block C or the medium yellow square which is in block B?
the medium yellow square  that is in block C the medium yellow square  which is in block B both of them none of them