There are three blocks, A, B and C. Block C is above block A and below block B. Block A has one big blue triangle. Block B has one big blue square. This block also has a medium blue triangle. A small black circle is to the right of the medium blue triangle and the big blue square. Block C has a small black circle.
Which object is above a small black circle? the big blue square or the big blue triangle?
the big blue square  the big blue triangle  both of them none of them