We have three blocks, A, B and C. Block A is to the left of block B and below block C. Block A contains a medium black square. Block B contains one medium black square. A medium yellow square is touching the bottom edge of this block. It is below the medium black square. Block C contains one medium blue square and a medium black square. The medium blue square is below the medium black square.
Are all medium black squares above a medium square which is above a black square that is in block A?