There are three blocks, A, B and C. A medium black square and a medium blue square are in block A. The medium black square is below the medium blue square. Block B is above block A. It has one medium yellow square and one medium blue square. The medium yellow square is below the medium blue square. Below block B there is block C. It has a medium blue square.
What is below the yellow object? a medium blue square that is in block B or a medium blue square that is in block C?
medium blue square  that is in block B medium blue square  that is in block C both of them none of them