We have three blocks, A, B and C. Block B is above and A is to the right of C. Block A contains one small blue square. Block B contains one small yellow triangle, a big blue triangle and a medium yellow square. Above the big blue triangle is the small yellow triangle. The big blue triangle is touching the bottom edge of this block. This shape is to the left of the medium yellow square. To the left of the medium yellow square is the small yellow triangle. Block C contains one big blue square and a big blue triangle. The big blue square is far from and below the big blue triangle.
Which object is above a big blue triangle? the medium yellow square or the small blue square?
the medium yellow square  the small blue square  both of them none of them