There are three blocks, A, B and C. Block A contains a big blue triangle and one big black triangle. The big blue triangle is to the left of the big black triangle. Block B is above block A. It has two medium blue triangles. Below and near to a medium black triangle which is to the left of medium blue triangle number two is medium blue triangle number one. Medium blue triangle number two is touching the right edge of this block. To the right of a small blue square there is the medium black triangle. To the right of, near to and above the small blue square there is medium blue triangle number one. Above block A there is block C which has a small yellow circle.
What is above the small blue object? a big black triangle or a medium blue triangle?
big black triangle  medium blue triangle  both of them none of them