There are three blocks, A, B and C. Block C is to the right of block B and below block A. Block A has one small blue circle. Block B contains a small black square. Block C has a medium yellow triangle, one big yellow triangle and one small blue circle. The medium yellow triangle is below the big yellow triangle and the small blue circle.
Which object is to the left of a small blue circle? the medium yellow triangle or the big yellow triangle?
the medium yellow triangle  the big yellow triangle  both of them none of them