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