Betsy designed a flag using blue triangles (\textcolor{lightgray}{\blacksquare}), small white squares (\square), and a red center square( \mathbf{\blacksquare})
, as shown. Let B be the total area of the blue triangles, W the total area of the white squares, and R the area of the red square. Which of the following is correct?
Answer Choices
A. B=W
B. W=R
C. B=R
D. 3 B=2 R
E. 2 R=W