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