A big yellow circle, a medium yellow circle and a small yellow triangle are in a block. To the left of and above a big yellow square is the medium yellow circle. A medium black square is touching the right edge of this block. The medium yellow circle is below and to the right of the small yellow triangle which is to the left of the big yellow square.
What is above the big yellow square? a small yellow triangle or a medium yellow circle?
small yellow triangle  medium yellow circle  both of them none of them