There are three blocks, A, B and C. Block A contains one medium black square. Then, we have block B with a medium blue triangle and a medium yellow square in it. The medium blue triangle is to the left of the medium yellow square. Block C is to the right of block A and below block B. It contains one small yellow square, one big yellow square and one small yellow triangle. A medium blue circle is also in this block. There is also a big yellow triangle touching the top edge of this block. The small yellow square is above the big yellow square which is to the right of and below the small yellow triangle. The medium blue circle is to the right of the big yellow triangle. The small yellow triangle is to the left of, near to and below the medium blue circle.
Which object is above a small yellow square? the medium blue triangle or the big yellow square?
the medium blue triangle  the big yellow square  both of them none of them