\(\lim \dfrac{{3{n^2} + 1}}{{{n^2} - 2}}.\)     

Câu hỏi: \(\lim \dfrac{{3{n^2} + 1}}{{{n^2} - 2}}.\)     

A \(3\)

B \( +\infty\)

C \(-3\)

D \( -\infty\)