In the diagram, a 4\times9 grid PQTV is formed from thirty-six 1\times1 squares. Lines PR and US are drawn with R and S on QT. What is the ratio of the shaded area to the unshaded area?

Answer Choices
A. 5:9
B. 9:8
C. 4:5
D. 9:5
E. 5:4
In the diagram, a 4\times9 grid PQTV is formed from thirty-six 1\times1 squares. Lines PR and US are drawn with R and S on QT. What is the ratio of the shaded area to the unshaded area?
Answer Choices
A. 5:9
B. 9:8
C. 4:5
D. 9:5
E. 5:4