There are two blocks, A and B. Block A is to the right of B. Block A has a big black circle. This block also contains one medium blue circle. To the left of the big black circle is the medium blue circle. The big black circle is touching the right edge of this block. Block B contains one big yellow triangle, a medium black triangle and a big yellow circle. To the right of a big black triangle and the medium black triangle is the big yellow triangle. The medium black triangle is touching the bottom edge of this block. Below the big black triangle there is the big yellow circle. The big yellow triangle is near to and touching the big yellow circle. Below the big yellow circle is the medium black triangle.
Which object is to the left of a big black circle? the big yellow circle or the medium blue circle?
the big yellow circle  the medium blue circle  both of them none of them