There are three blocks, A, B and C. Blocks A and B are below C. Block A has a small black square, one medium yellow triangle and a big blue triangle. This block also has a big black triangle. To the right of the big blue triangle is the medium yellow triangle. The big blue triangle is touching the bottom edge of this block. The big black triangle is near to the small black square and the medium yellow triangle. This object is above the big blue triangle. Block B has one big yellow square and one big black square. The big yellow square is touching the bottom edge of this block. This shape is below and to the right of the big black square. Block C has one small black square.
Which object is above a blue thing? the big black square or the big yellow square?
the big black square  the big yellow square  both of them none of them