There are three blocks. We call them A, B and C. Block B is to the left of A. Block A is above C. Block A has one medium blue triangle. Block B contains one big black triangle and a medium black circle. One small black circle is also in this block. Below and to the right of the medium black circle is the big black triangle. Below and to the left of the medium black circle is the small black circle. Block C contains two medium black squares. To the right of medium black square number two is medium black square number one. It also contains a big yellow circle. The big yellow circle is to the left of, far from and below medium black square number one. Medium black square number one is touching the right edge of this block.
What is below the medium black circle? a big black triangle or a small black circle?
big black triangle  small black circle  both of them none of them