We have three blocks, A, B and C. Block C is above block B and it is to the right of block A. Block A contains one medium blue square and a medium yellow square. The medium blue square is below the medium yellow square. Block B has one medium black square. A medium blue square is touching the bottom edge of this block. It is below the medium black square. Block C contains a medium yellow square and a medium black square. The medium yellow square is below the medium black square.
Which object is below a medium black square? the medium yellow square which is in block C or the medium yellow square which is in block A?
the medium yellow square  which is in block C the medium yellow square  which is in block A both of them none of them