We have three blocks. We call them A, B and C. Block A has a medium black square, a medium blue square and one medium yellow square. The medium blue square is below the medium yellow square. Below the medium blue square and the medium yellow square there is the medium black square. Then, there is block B. It has one medium blue square. Block C is above block B and below block A. It contains two medium blue squares. It also has a medium yellow square. Below medium blue square number two and the medium yellow square there is medium blue square number one. Medium blue square number two is below the medium yellow square.
Which object is below a medium square? the medium yellow square which is in block A or the medium yellow square that is in block C?
the medium yellow square  which is in block A the medium yellow square  that is in block C both of them none of them