There are three blocks, A, B and C. Block B is below C. Block A is below B. Block A contains one big blue square. Block B contains one big yellow triangle and a big yellow square. The big yellow triangle is to the left of the big yellow square and a medium blue circle. This block also has a medium yellow triangle. And block C contains one big blue square.
Which object is below a big blue square? the medium blue circle or the big yellow triangle?
the medium blue circle  the big yellow triangle  both of them none of them