There are three blocks. We call them A, B and C. Block A has one medium yellow square. Then, there is block B which contains a medium blue square. It also has one medium black square. Below the medium blue square there is the medium black square. Finally, to the right of block A we have block C which is to the left of block B. It has two medium yellow squares. Medium yellow square number one is below medium yellow square number two.
What is to the left of the blue object? a medium yellow square or a medium black square?
medium yellow square  medium black square  both of them none of them