We have three blocks, A, B and C. Block B is below block A and to the left of block C. Block A contains one medium black square. Below the medium black square there is a medium blue square. Block B has one medium black square and one medium yellow square. The medium black square is below the medium yellow square. Block C contains one medium yellow square. A medium blue square is also in this block. The medium yellow square is below the medium blue square.
Which object is below a medium yellow square? the medium black square that is in block A or the medium black square that is in block B?
the medium black square  that is in block A the medium black square  that is in block B both of them none of them