What is the smallest positive integer $n$ for which $324$ is a factor of $6^n?$

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by M7MBA » Thu Jul 02, 2020 1:00 am

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What is the smallest positive integer $n$ for which $324$ is a factor of $6^n?$

A. 2
B. 3
C. 4
D. 5
E. 6

[spoiler]OA=C[/spoiler]

Source: GMAT Paper Tests

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