There are three blocks, A, B and C. Block A is to the left of and C is above B. Block A has three medium yellow squares. Below medium yellow square number three , medium yellow square number two and a medium black square is medium yellow square number one. Medium yellow square number two is below medium yellow square number three. Medium yellow square number one is touching the bottom edge of this block. The medium black square is below medium yellow square number two. Block B contains one medium black square. And block C has one medium black square.
Which object is below a medium yellow square? the medium black square that is in block A or the medium black square which is in block B?
the medium black square  that is in block A the medium black square  which is in block B both of them none of them