There are three blocks, A, B and C. A big yellow square is in block A. Block B is to the right of block A. It contains one medium yellow circle, a medium yellow square and one big blue triangle. The medium yellow circle is above the big blue triangle and the medium yellow square. This block also has a small yellow square. To the right of, near to and above the big blue triangle is the medium yellow square. Below block B there is block C. It contains one small blue circle, a big black circle and a small black triangle. A medium blue circle and a medium black square are also in this block. The big black circle is touching the right edge of this block. It is below the medium blue circle and the medium black square.
What is below the medium blue circle? a medium yellow square or a big black circle that is touching the right edge of a block?
medium yellow square  big black circle  that is touching the right edge of  a block  both of them none of them