Challenge for the Weak 2 - P2
Evaluate the following limit:
$$
\lim_{n \to \infty} \sum_{k=1}^{n} \frac{1}{4k^2 - 1}
$$
A. $\frac{1}{4}$
B. $\frac{1}{2}$
C. $0$
D. $-1$
E. does not exist
Your answer should be a single capitalized letter, e.g., 'A'.
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