Describe the End Behavior of the Function $$f ( x ) = 2 x ^ { - 1 } \cos 2 x$$

Describe the end behavior of the function.
- $$f ( x ) = 2 x ^ { - 1 } \cos 2 x$$

A) $\lim _ { x \rightarrow \infty } f ( x ) = 2 ; \lim _ { x \rightarrow } f ( x ) = 2$
B) $\lim _ { x \rightarrow \infty } f ( x ) = 0 ; \lim _ { x \rightarrow \infty } f ( x ) = 0$
C) $\lim _ { x \rightarrow \infty } f ( x ) = - \infty ; \lim _ { x \rightarrow \infty } f ( x ) = \infty$
D) $\lim _ { x \rightarrow \infty } f ( x ) = 0 ; \lim _ { x \rightarrow \infty } f ( x ) = 2$

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