Give an Appropriate Answer $\lim _ { x \rightarrow -9 } f ( x ) = 49$

Multiple Choice

Give an appropriate answer.
-Let $\lim _ { x \rightarrow -9 } f ( x ) = 49$ . Find $\lim _ { x \rightarrow -9 } \sqrt { f ( x ) }$ .

A) 49
B) $- 9$
C) 7
D) $2.6458$