CEMC Cayley, 2003

Geometry Difficulty 2.0 Junior Find the answer Canada

In the diagram, the four circles have a common centre, and have radii of 1, 2, 3, and 4. The ratio of the area of the shaded regions to the area of the largest circle is

(A) $5:8$ (B) $1:4$ (C) $7:16$ (D) $1:2$ (E) $3:8$

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