We have three blocks, A, B and C. Block A is below B. Block B is above C. Block A has one medium blue square and one big black square. The medium blue square is to the left of the big black square. The big black square is touching the right edge of this block. Block B contains a medium black square. Block C contains one small yellow triangle. Below a medium black triangle there is the small yellow triangle. Below the medium black triangle is a big yellow square. The small yellow triangle is to the right of and near to the big yellow square.
What is below the medium black square? a big yellow square or a big black square that is touching the right edge of a block?
big yellow square  big black square  that is touching the right edge of  a block  both of them none of them