Which of the following series converges by the Comparison Test with ∑1n2\sum \frac{1}{n^2}∑n21?
∑1n2−1\sum \frac{1}{n^2-1}∑n2−11
∑n2n4+1\sum \frac{n^2}{n^4+1}∑n4+1n2
∑1n\sum \frac{1}{n}∑n1
∑nn2−1\sum \frac{n}{n^2-1}∑n2−1n