There are three blocks. Lets call them A, B and C. Block C is above blocks B and A. Block A has a medium yellow square. This block also has a big yellow square. The medium yellow square is touching the right edge of this block. It is to the right of and far from the big yellow square. Block B has one big black triangle. And block C contains one big black triangle and a big yellow square. It also contains a small black square. The small black square is below and near to the big black triangle which is below the big yellow square.
Which object is below a black square? the big yellow square that is in block C or the big yellow square that is in block A?
the big yellow square  that is in block C the big yellow square  that is in block A both of them none of them