Trong các mệnh đề sau, mệnh đề nào đúng

Câu hỏi: Trong các mệnh đề sau, mệnh đề nào đúng?

A. \(\mathop {\lim }\limits_{x \to {x_0}} f\left( x \right) = L;\mathop {\lim }\limits_{x \to {x_0}} g\left( x \right) =  \pm \infty \) thì \(\mathop {\lim }\limits_{x \to {x_0}} {\rm{[}}f\left( x \right).g\left( x \right){\rm{]}} =  \pm \infty \)

B. \(\mathop {\lim }\limits_{x \to {x_0}} f\left( x \right) = L;\mathop {\lim }\limits_{x \to {x_0}} g\left( x \right) =  \pm \infty \) thì \(\mathop {\lim }\limits_{x \to {x_0}} {\rm{[}}f\left( x \right).g\left( x \right){\rm{]}} = 0\)

C. \(\mathop {\lim }\limits_{x \to {x_0}} f\left( x \right) = L;\mathop {\lim }\limits_{x \to {x_0}} g\left( x \right) =  \pm \infty \) thì \(\mathop {\lim }\limits_{x \to {x_0}} \frac{{g\left( x \right)}}{{f\left( x \right)}} =  \pm \infty \)

D. \(\mathop {\lim }\limits_{x \to {x_0}} f\left( x \right) = L;\mathop {\lim }\limits_{x \to {x_0}} g\left( x \right) =  \pm \infty \) thì \(\mathop {\lim }\limits_{x \to {x_0}} \frac{{f\left( x \right)}}{{g\left( x \right)}} = 0\)