There are three blocks, A, B and C. Block A has a medium black square. Then, there is block B. It contains one medium yellow square and a medium black square. Below the medium black square is the medium yellow square. Finally, to the left of block A we have block C. It is below block B. It has two medium blue squares. Below medium blue square number two is medium blue square number one. It also has one medium yellow square. The medium yellow square is below medium blue square number one. This object is below medium blue square number two.
Which object is below a medium yellow square? the medium black square which is in block A or the medium black square that is in block B?
the medium black square  which is in block A the medium black square  that is in block B both of them none of them