There are two blocks, A and B. Block A is to the left of B. Block A has one medium blue triangle. Block B contains a medium yellow triangle, a big blue triangle and a medium yellow square. The medium yellow triangle is above and to the right of the big blue triangle. A big black triangle is touching the bottom edge of this block. A medium black triangle is touching the right edge of this block. It is to the right of the big blue triangle and the medium yellow square.
What is to the right of the medium blue triangle? a big blue triangle or a medium square?
big blue triangle  medium square  both of them none of them