Long description: SeriesDesign1
Alt text: The image displays three separate circles labeled with subscripts, representing \(C_1\), \(C_2\), and \(C_3\).
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- The image contains three distinct, labeled circles arranged horizontally.
- The leftmost circle is labeled \(C_1\).
- The middle circle is labeled \(C_2\).
- The rightmost circle is labeled \(C_3\).