There are three blocks. We call them A, B and C. Block C is above B and block A is to the right of C. Block A has a medium black square. Below a medium blue square is the medium black square. Block B has a medium blue square and one medium yellow square. The medium blue square is below the medium yellow square. And block C contains one medium yellow square.
Which object is below a medium yellow square? the medium blue square that is in block A or the medium blue square that is in block B?
the medium blue square  that is in block A the medium blue square  that is in block B both of them none of them