There are two blocks, A and B. Block A contains one medium blue square. Above block A we have block B with two medium yellow squares in it. Medium yellow square number one is below a medium black square. Medium yellow square number two is below the medium black square. This block also contains one medium blue square. The medium blue square is below the medium black square , medium yellow square number two and medium yellow square number one.
What is below the black shape? a shape that is touching the bottom edge of a block or a medium yellow square?
shape that is touching the bottom edge of a block  medium yellow square  both of them none of them