For every integer \( n \geq 1,\left(3^{2^{n}}-1\right) \) is divisible by....

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For every integer \( n \geq 1,\left(3^{2^{n}}-1\right) \) is divisible by
\( \mathrm{P} \)
(1) \( 2^{n+2} \)
(2) \( 2^{n+1} \)
(3) \( 2^{n+3} \)
(4) \( 2^{n} \)


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