We have two blocks. We call them A and B. Block A has a medium blue triangle. Above block A is block B which has a big black triangle, one medium blue triangle and one medium black triangle. This block also contains a small yellow triangle. One big black square is also in this block. It is above and to the right of the small yellow triangle. The medium blue triangle is touching the right edge of this block. This object is above the small yellow triangle and the medium black triangle.
Which object is above a medium blue triangle? the medium black triangle or the square?
the medium black triangle  the square  both of them none of them