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