$\text { Evaluate the limit } \lim _ { x \rightarrow 0 } \frac { \sqrt { 49 - x ^ { 2 } } - 7 } { 9 x } \text { using L'Hopital's Rule if necessary. }$

Multiple Choice

$\text { Evaluate the limit } \lim _ { x \rightarrow 0 } \frac { \sqrt { 49 - x ^ { 2 } } - 7 } { 9 x } \text { using L'Hopital's Rule if necessary. }$

A) $- \frac { 1 } { 9 }$
B) $- \frac { 7 } { 9 }$
C) 1
D) 0
E) does not exist