We have three blocks, A, B and C. Block A is below C and block B is above A. Block A contains a medium black square, one big yellow circle and a small black circle. It also has one small blue triangle. Near to the small black circle is the medium black square. It is below the big yellow circle which is to the left of and above the small black circle. It is touching the bottom edge of this block. Near to the small blue triangle is the big yellow circle. Block B contains one big blue triangle. And block C has a medium black triangle, a big blue square and a medium yellow square. A medium blue square is also touching the right edge of this block. The medium black triangle is to the left of the big blue square and the medium blue square. The big blue square is touching the right edge of this block. It is above the medium blue square.. Near to and to the right of the medium yellow square there is the medium black triangle.
Which object is below a medium blue square? the small black circle or the medium yellow square?
the small black circle  the medium yellow square  both of them none of them