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