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