A flag is designed as a large square, divided into smaller unit squares. A central $2\times 2$ square is red. There are four $1\times 1$ white squares at each corner of the large square. The remaining area is blue. Let $R$ be the area of the red square, $W$ be the total area of the white squares, and $B$ be the total area of the blue regions. Which of the following statements is correct?