$\text { Find the } x \text {-values (if any) at which the function } f ( x ) = \frac { x + 2 } { x ^ { 2 } + 6 x + 8 } \text { is not continuous. }$

Multiple Choice

$\text { Find the } x \text {-values (if any) at which the function } f ( x ) = \frac { x + 2 } { x ^ { 2 } + 6 x + 8 } \text { is not continuous. }$ Which of the discontinuities are removable?

A) no points of discontinuity
B) $x = - 2$ (not removable) , $x = - 4$ (removable)
C) $x = - 2$ (removable) , $x = - 4$ (not removable)
D) no points of continuity
E) $x = - 2$ (not removable) , $x = - 4$ (not removable)