This question: $6$ point$($s$)$

Determine if the following limit exists. Compute the limit if it exists.

$\underset{x7}{lim}\frac{x^2-2x-35}{x-7}$

Select the correct choice below and, if necessary, fill in the answer box to complete your choice.

A$.\underset{x7}{lim}\frac{x^2-2x-35}{x-7}=($Simplify your answer.$)$

B$.$ The limit does not exist.