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Moderate

Circles and Cylinders: How Much Blue

GMAT-YR4KQL

Given that $A$ is the center of each circle, and $AB = BC = CD$, what fraction of the largest circle is shaded blue?

A

$\cfrac{1}{9}$

B

$\cfrac{8}{25}$

C

$\cfrac{1}{3}$

D

$\cfrac{4}{9}$

E

$\cfrac{5}{9}$