\( \lim _{n \rightarrow \infty} \frac{n(2 n+1)^{2}}{(n+2)\left(n^{2}+3 n-1\right)} \) is equal t...
\( \lim _{n \rightarrow \infty} \frac{n(2 n+1)^{2}}{(n+2)\left(n^{2}+3 n-1\right)} \) is equal to
(A) 2
(B) 4
(C) \( \infty \)
(D) undefined
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