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