There are three blocks, A, B and C. Block A is to the right of blocks B and C. Block A has one medium black square. Below a medium yellow square is the medium black square. Block B has a medium black square and a medium yellow square. The medium black square is touching the bottom edge of this block. This object is below the medium yellow square. And block C has one medium black square.
Which object is to the left of a medium black square? the medium yellow square which is in block B or the medium yellow square that is in block A?
the medium yellow square  which is in block B the medium yellow square  that is in block A both of them none of them