There are three blocks, A, B and C. Block A has one medium black square. It also contains one medium yellow square. Below the medium yellow square there is the medium black square. Block B is below block A. It has one medium black square. Finally, we have block C which is to the right of block B. It contains two medium black squares and two other medium yellow squares. Medium black square number one is touching the bottom edge of this block. Medium black square number two is below medium yellow square number two. Medium yellow square number one is below medium yellow square number two and medium black square number two. Below medium yellow square number two and medium yellow square number one there is medium black square number one.
Which object is to the left of a medium yellow square? medium black square number two or the medium black square that is in block B?
medium black square  number two the medium black square  that is in block B both of them none of them