\(\mathop {\lim }\limits_{x \to 1} \frac{{{x^2} +...

Câu hỏi: \(\mathop {\lim }\limits_{x \to 1} \frac{{{x^2} + 3x - 4}}{{{x^2} - 1}}\) bằng 

A. \( - \infty \)

B. 2

C. \(\frac{5}{2}\)

D. \( + \infty \)