PLEASE URGENT!!! Evaluate $\underset{x}{lim}f(x)$ and $\underset{x-}{lim}f(x)$ for the rational function. Then give the horizontal asymptote of $f($if any$).$

$f(x)=\frac{14x^8-6}{2x^8-3x^7}$

Find $\underset{x}{lim}f(x).$ Select the correct choice, and, if necessary, fill in the answer box to complete your choice.

A$.\underset{x}{lim}\frac{14x^8-6}{2x^8-3x^7}=,($Simplify your answer.$)$

B$.$ The limit does not exist and is neither $$ nor $-.$

Find $\underset{x-}{lim}f(x).$ Select the correct choice, and, if necessary, fill in the answer box to complete your choice.

A$.\underset{x-}{lim}\frac{14x^8-6}{2x^8-3x^7}=,($Simplify your answer.$)$

B$.$ The limit does not exist and is neither $$ nor $-.$

Identify the horizontal asymptote$($s$).$ Select the correct choice, and, if necessary, fill in the answer box$($es$)$ to complete your cl

A$.$ The function has one horizontal asymptote, $$

$($Type an equation.$)$

B$.$ The function has two horizontal asymptotes. The top asymptote is and the bottom asymptote is