There are three blocks. We call them A, B and C. Two medium blue squares are in block A. This block also contains a medium black circle and a small black circle. Above the small black circle and the medium black circle there is medium blue square number one.. To the right of the small black circle is the medium black circle. Block B is to the left of block A. It has a medium black circle and one small black square. The medium black circle is to the left of a medium black square and the small black square. The medium black square is below a small yellow square. The small yellow square is touching the top edge of this block. Near to the medium black square is the small black square. Finally, there is block C to the left of block A. It has one medium yellow square.
What is to the right of the small yellow square? a medium black square or a medium blue square?
medium black square  medium blue square  both of them none of them