Find the Directrices of the Hyperbola $$9 x ^ { 2 } - 16 y ^ { 2 } = 144$$

Multiple Choice

Find the directrices of the hyperbola.
- $$9 x ^ { 2 } - 16 y ^ { 2 } = 144$$

A) $y = \pm \frac { 16 } { 5 }$
B) $x = \pm \frac { 9 } { 5 }$
C) $x = \pm \frac { 16 } { 5 }$
D) $y = \pm \frac { 9 } { 5 }$