There are three blocks, A, B and C. Block A contains one medium yellow circle. Block B is above block A. It contains two medium black circles. Medium black circle number one is to the right of a small blue square. Below and to the right of the small blue square is medium black circle number two. Finally, we have block C which is to the right of block B. It contains one small yellow circle.
What is above the medium yellow circle? a medium black circle or a small yellow circle?
medium black circle  small yellow circle  both of them none of them