We have two blocks, A and B. There are one small yellow triangle, one medium blue square and one small black square in block A. The medium blue square is touching the bottom edge of this block. It is to the right of and below the small black square. The small yellow triangle is above the medium blue square. Block B is above block A. It contains a medium blue square and a small black square. One small blue triangle is also in this block. The medium blue square is to the left of the small black square and the small blue triangle.
Which object is below a medium blue square? the small yellow triangle or the small blue triangle?
the small yellow triangle  the small blue triangle  both of them none of them