Graph the Ellipse and Locate the Foci $$\frac { x ^ { 2 } } { 16 } + \frac { y ^ { 2 } } { 9 } = 1$$

Graph the ellipse and locate the foci.
- $$\frac { x ^ { 2 } } { 16 } + \frac { y ^ { 2 } } { 9 } = 1$$

A) foci at $( \sqrt { 21 } , 0 )$ and $( - \sqrt { 21 } , 0 )$


B) foci at $( 2 \sqrt { 5 } , 0 )$ and $( - 2 \sqrt { 5 } , 0 )$


C) $\text { foci at }(2 \sqrt{3}, 0) \text { and }(-2 \sqrt{3}, 0)$


D) $\text { foci at }(0,2 \sqrt{3}) \text { and }(0,-2 \sqrt{3})$