There are three blocks, A, B and C. Block C is above blocks A and B. Block A contains one medium blue square. This block also contains one medium black square. The medium black square is below the medium blue square. Block B has one medium black square. A medium yellow square is also touching the bottom edge of this block. Below the medium black square there is the medium yellow square. Block C has a medium black square.
Which object is below a medium black square? the medium black square that is touching the bottom edge of a block or the medium black square that is in block B?
the medium black square  that is touching the bottom edge of a block  the medium black square  that is in block B both of them none of them