We have three blocks, A, B and C. Block A has one medium yellow triangle. To the right of and above the medium yellow triangle there is a medium black triangle. Block B is to the left of block A. It has a medium yellow square. There is also one big black square touching the bottom edge of this block. The big black square is below and to the right of the medium yellow square. Below block B there is block C with a small yellow triangle in it.
Which object is below a black square? the small object or the medium yellow square?
the small object the medium yellow square  both of them none of them