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