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