(A) (n raise to power 2)
(B) (n raise to power 2 and then minus 1)
(C) 2 raise to power n)
(D) (2 raise to power n and then minus 1)
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(A) (n raise to power 2)
(B) (n raise to power 2 and then minus 1)
(C) 2 raise to power n)
(D) (2 raise to power n and then minus 1)