\(\underset{x\,\to \,-\,\infty }{\mathop{\...

Câu hỏi: \(\underset{x\,\to \,-\,\infty }{\mathop{\lim }}\,\frac{3x-1}{x+5}\)bằng

A \(3.\)                            

B \(-\,3.\)                        

C \(-\frac{1}{5}.\)                                  

D \(5.\)