An algorithm called Classify, has three phases. Phase $1$ is O$($N$),$ Phase $2$ is O$($N$2),$ and Phase $3$ is O$($N$2).$

The big$-$O notation for Classify is:

Question $20$ Select one:

O$($N$5)$

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O$(2$N$2+$ N$)$

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O$($N$2+$ N$)$

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O$($N$2)$