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