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