There are three blocks. Lets call them A, B and C. Blocks C and B are to the right of A. Block A contains two medium black squares. Medium black square number one is touching the bottom edge of this block. Medium black square number two is below a medium yellow square. Medium black square number one is below the medium yellow square and medium black square number two. Block B contains a medium yellow square. And block C has two medium black squares. Medium black square number one is below medium black square number two.
Which object is to the left of a medium black square? the medium yellow square that is in block A or the medium yellow square that is in block B?
the medium yellow square  that is in block A the medium yellow square  that is in block B both of them none of them