There are three blocks, A, B and C. There is one medium blue circle in block A. Then, there is block B. It contains one big blue square, a big black square and one big black circle. The big black square is touching the bottom edge of this block. It is to the right of the big black circle. To the left of the square which is to the right of the big black circle there is the big blue square. It is below the big black circle. Finally, to the left of block A we have block C which is above block B. It contains a medium yellow circle.
Which object is below a yellow thing? the medium blue circle or the big black circle?
the medium blue circle  the big black circle  both of them none of them