There are three blocks, A, B and C. Block A has two medium yellow squares. A big black circle is also touching the right edge of this block. The big black circle is below a small blue square and a small yellow circle. Block B is above block A. It has one medium black triangle. To the left of the medium black triangle is a medium black circle. Finally, we have block C. It is to the left of block B. It has one small black triangle and one medium yellow circle. To the left of the medium yellow circle is the small black triangle.
What is below the medium black triangle? a small black triangle or a medium yellow square?
small black triangle  medium yellow square  both of them none of them