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

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

A. \(\frac{3}{4}\)

B. \(-\frac{3}{4}\)

C. \( - \infty \)

D. \( + \infty \)