We have three blocks, A, B and C. Block C is above blocks A and B. Block A has one medium yellow square and a medium black square. Below the medium black square there is the medium yellow square. Block B contains a medium black square. Block C has a medium yellow square and a medium blue square. The medium yellow square is below the medium blue square.
Which object is below a medium 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