We have three blocks. We call them A, B and C. Block A is to the right of block C and below block B. Block A contains one medium blue triangle. Block B has a big black triangle and one medium blue triangle. There is also a medium black triangle in this block. Below the medium blue triangle and the medium black triangle there is the big black triangle. Block C contains one medium yellow square.
Which object is above a medium blue triangle? the medium black triangle or the medium yellow square?
the medium black triangle  the medium yellow square  both of them none of them