There are three blocks, A, B and C. Block A contains one medium blue square. A medium yellow square is below the medium blue square. Block B is below block A. It contains a medium blue square. Below block B there is block C with three medium blue squares in it. Medium blue square number one is below medium blue square number three and medium blue square number two. Below medium blue square number three is medium blue square number two.
What is below the yellow thing? a medium blue square number one or a medium blue square number three?
medium blue square  number one medium blue square  number three both of them none of them