There are three blocks. We call them A, B and C. Block A is to the left of B. Block B is below C. Block A has one medium blue square. Block B has a medium blue square. Block C has three medium blue squares. There is also a medium yellow square touching the bottom edge of this block. The medium yellow square is below medium blue square number three , medium blue square number two and medium blue square number one. Below medium blue square number two which is below medium blue square number three is medium blue square number one.
What is above the yellow thing? a medium blue square which is in block B or a medium blue square number three?
medium blue square  which is in block B medium blue square  number three both of them none of them