\(\mathop {\lim }\limits_{x \to  + \infty } \left(...

Câu hỏi: \(\mathop {\lim }\limits_{x \to  + \infty } \left( {\sqrt {{x^2} + 3x - 1}  - x} \right)\) bằng

A. \(\frac{3}{2}\)

B. \(-\frac{1}{2}\)

C. \(\frac{1}{2}\)

D. \(-\frac{3}{2}\)