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A) \[\frac{{{n}^{2}}}{2n-1}\]
B) \[\frac{2}{n}-\frac{1}{{{n}^{2}}}\]
C) \[\frac{{{n}^{2}}}{n+1}\]
D) \[\frac{2n+1}{{{n}^{2}}}\]
Correct Answer: B
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