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