There are three blocks, A, B and C. Block A is to the right of block B and to the left of block C. Block A has a medium yellow square. Block B has a medium yellow square. There is also a medium black square in this block. The medium black square is below the medium yellow square. Block C has one medium black square and one medium yellow square. Below the medium yellow square is the medium black square.
Is there any medium black squares below a medium yellow square?