There are two blocks, A and B. There are one small yellow triangle and a big blue triangle in block A. To the left of the big blue triangle there is the small yellow triangle. The big blue triangle is touching the bottom edge of this block. Block B is below block A. It has one medium black square and one medium blue triangle. Near to a big blue triangle is the medium black square. This block also contains a medium blue square. This object is to the right of the medium blue triangle and the big blue triangle.
What is below the yellow triangle? a medium blue triangle or a big blue triangle?
medium blue triangle  big blue triangle  both of them none of them