Find the equation for any horizontal asymptotes for the function below.

$f(x)=\frac{6-7x{x}^2}{49x6x^2}$

Determine the equation of any horizontal asymptotes. Select the correct choice below and, if nece answer box within your choice.

A$.$ The horizontal asymptote$($s$)$ is$/$are $y=($Simplify your answer. Use a comma to separate answers as needed.$)$

B$.$ There is no horizontal asymptote.