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