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