We have three blocks, A, B and C. Block C is above B and block A is above C. Block A has one small blue circle, a big black circle and a medium blue square. Above the big black circle which is below and to the left of the medium blue square is the small blue circle. Block B has one big black square. Block C contains a medium yellow circle.
What is below the medium blue square? a big black square or a big black circle?
big black square  big black circle  both of them none of them