There are three blocks, A, B and C. A small blue square and one small black square are in block A. The small blue square is above the small black square. The small black square is touching the left edge of this block. Then, we have block B which has one small blue triangle and a big black triangle. The small blue triangle is to the left of and below the big black triangle. Finally, we have block C above block B and to the right of block A. It has one big black triangle and one medium blue square. The medium blue square is touching the bottom edge of this block. The big black triangle is near to the medium blue square.
Which object is below a big black triangle? the small blue triangle or the medium blue square that is touching the bottom edge of a block?
the small blue triangle  the medium blue square  that is touching the bottom edge of a block  both of them none of them