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