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