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