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