There are three blocks. We call them A, B and C. Block C is to the right of A. Block A is above B. Block A has one small yellow triangle and one medium yellow triangle. The small yellow triangle is touching the right edge of this block. This block also has a medium black triangle. Below the medium yellow triangle and the medium black triangle there is the small yellow triangle. Block B contains one small yellow triangle. And block C has one small blue triangle and a big yellow square. The small blue triangle is to the left of, near to and above the big yellow square.
Which object is above a small yellow triangle? the big yellow square or the blue triangle?
the big yellow square  the blue triangle  both of them none of them