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