There are three blocks. We call them A, B and C. One medium yellow square and a medium black square are in block A. The medium yellow square is below the medium black square. Block B is above block A. It contains one medium yellow square. Finally, there is block C below block A. It has three medium black squares. Below medium black square number three , medium black square number two and a medium blue square is medium black square number one. Below medium black square number three is medium black square number two. The medium blue square is below medium black square number two.
Which object is below a medium black square? medium black square number one or the medium black square that is in block A?
medium black square  number one the medium black square  that is in block A both of them none of them