There are three blocks, A, B and C. Block B is to the right of C. Block A is to the right of B. Block A contains one medium black square. Block B has a medium blue square. Block C contains two medium blue squares. Medium blue square number one is below a medium yellow square and medium blue square number two. Below the medium yellow square is medium blue square number two.
What is to the left of the black thing? a medium yellow square or a medium blue square?
medium yellow square  medium blue square  both of them none of them