A square flag design features a central white cross, surrounded by blue squares, and red triangles. The flag is conceptually a square divided into a $5\times 5$ grid of unit squares. The white cross is formed by a central $1\times 1$ square and four $1\times 1$ squares extending from its sides (forming a plus sign). There are 4 blue squares, each occupying a $1\times 1$ unit square, positioned at the corners of the flag. Let $W$ be the total area of the white cross, $B$ the total area of the blue squares, and $R$ the total area of the red triangles. Which of the following is correct?