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