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