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

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

A \( + \infty \)                            

B \(2\)                                        

C \(3\)                                        

D \( - \infty \)