Determine the intervals on which the following function is concave up or concave down. Idenlify any inflection points.

$f(x)=-ln(5x^{2}2)$

Determine the intervals on which the following functions are concave up or concave down. Select the correct choice below and fill in the answer box$($es$)$ to complete your choice. $($Simplify your answer. Type your answer in interval notation. Use a corrma to separate answers as needed. Use ascending order.$)$

A$.$ The function is concave down on $$ and concave up on $$

B$.$ The function is concave up on $$ and the function is never concave down.

C$.$ The function to ennouve down on $$ and the function is never concave up$.$

Locate any inflection points of $1.$ Select the correct choice butow and, $7$ necessary, fitt th the answer box to complete your choice.

A$.$ An inflection point occurs at $x=$

$($Use a comma to separate answers as needed$)$

B$.$ There are no inflection points for $f$