There are three blocks, A, B and C. A small yellow circle, one small blue square and a small blue circle are in block A. The small yellow circle is below the small blue circle. A medium yellow circle is to the left of and below the small yellow circle which is near to the small blue square. To the left of the small blue circle there is the small blue square. Block B is to the left of block A. It contains one medium black triangle. Finally, there is block C which is to the left of block A. It has a small blue triangle and one small black square. The small blue triangle is touching the bottom edge of this block. To the left of a medium blue square there is the small black square. Below the medium blue square and the small black square is the small blue triangle.
What is to the right of the medium blue square? a small yellow circle or a small black square?
small yellow circle  small black square  both of them none of them