We have three blocks. We call them A, B and C. Block A is below C. Block B is below A. Block A has a small yellow square. Block B contains one small black square and a big yellow square. The small black square is near to and below the big yellow square. Block C contains a small black triangle, a medium blue triangle and one big yellow circle. The medium blue triangle is below a big yellow triangle. It is to the right of the big yellow circle which is below and near to the big yellow triangle. To the right of the big yellow triangle there is the small black triangle.
Which object is above a small black square? the medium object or the big yellow circle?
the medium object the big yellow circle  both of them none of them