There are three blocks, A, B and C. Block C is to the right of B and block B is to the left of A. Block A contains two medium blue triangles. Far from and to the right of medium blue triangle number two is a big yellow circle. Medium blue triangle number one is to the right of and below medium blue triangle number two. Block B contains a medium yellow triangle, one small yellow square and one medium black circle. To the left of, far from and below the small yellow square is the medium yellow triangle. This object is touching the bottom edge of this block. To the right of the medium black circle is the small yellow square. And block C has two big black triangles. Big black triangle number one is touching the bottom edge of this block. A big yellow circle is to the right of big black triangle number two. This object is touching the top edge of this block. This shape is above and to the right of big black triangle number one.
Which object is to the left of a medium blue triangle? the small yellow square or the medium black circle?
the small yellow square  the medium black circle  both of them none of them