We have three blocks, A, B and C. Block B is to the left of block C and above block A. Block A contains a big yellow triangle. Block B contains a medium black triangle and one medium blue circle. Touching the medium blue circle there is the medium black triangle. The medium blue circle is touching the right edge of this block. And block C contains a big black circle, one small black triangle and a medium yellow square. One medium blue circle is also in this block. It also contains one big blue square. This shape is below and to the left of the medium blue circle. The big black circle is touching the bottom edge of this block. To the right of the big blue square and the medium yellow square is the small black triangle.
What is to the right of the big blue square? a medium black triangle or a small thing?
medium black triangle  small thing both of them none of them