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