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