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