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