Determine where the following function is $($a$)$ increasing, $($b$)$ decreasing, and $($c$)$ determine where relative extrema occur. Do not sketch the graph.

$y=(x^2-169{)}^4$

$($a$)$ On which interval$($s$)$ is the function increasing? Select the correct choice below and, if necessary, fill in the answer box to complete your choice.

A$.$ The function is increasing on the interval$($s$).$

$($Type your answer in interval notation. Use a comma to separate answers as needed.$)$

B$.$ There is no interval on which the function is increasing.