There are three blocks. We call them A, B and C. Block B is below and A is above C. Block A has a medium blue circle. Block B has one big yellow square. Block C has a medium black triangle, one medium yellow circle and one small yellow triangle. Below a big yellow triangle there is the medium black triangle. Above the small yellow triangle there is the medium yellow circle. The small yellow triangle is touching the right edge of this block. The medium yellow circle is to the right of and touching the big yellow triangle. The medium black triangle is below the small yellow triangle.
Which object is below a medium circle? the big yellow square or the medium yellow circle?
the big yellow square  the medium yellow circle  both of them none of them