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 yellow square or the medium black triangle?
the yellow square  the medium black triangle  both of them none of them