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