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