There are three blocks, A, B and C. Block B is to the left of block A and to the right of block C. Block A has one medium black circle. Block B contains a big black circle and one medium black triangle. The big black circle is to the left of the medium black triangle. The medium black triangle is touching the right edge of this block. And block C has one big yellow circle, a medium black square and one small blue circle. Near to the medium black square and the small blue circle there is the big yellow circle. The medium black square is below and near to the small blue circle.
What is to the left of the medium black circle? a big black circle or a medium triangle that is touching the right edge of a block?
big black circle  medium triangle  that is touching the right edge of  a block  both of them none of them