Identify the Vertices and Co-Vertices of the Ellipse $9 x ^ { 2 } + 49 y ^ { 2 } - 4 = 0$

Multiple Choice

Identify the vertices and co-vertices of the ellipse $9 x ^ { 2 } + 49 y ^ { 2 } - 4 = 0$ .

A) vertices: $( - 3,0 ) , ( 3,0 )$ co-vertices: $( 0 , - 7 ) , ( 0,7 )$
B) vertices: $( 0 , - 7 ) , ( 0,7 )$ co-vertices: $( - 3,0 ) , ( 3,0 )$
C) vertices: $\left( - \frac { 3 } { 2 } , 0 \right) , \left( \frac { 3 } { 2 } , 0 \right)$ co-vertices: $\left( 0 , - \frac { 7 } { 2 } \right) , \left( 0 , \frac { 7 } { 2 } \right)$
D) vertices: $\left( - \frac { 2 } { 3 } , 0 \right) , \left( \frac { 2 } { 3 } , 0 \right)$ co-vertices: $\left( 0 , - \frac { 2 } { 7 } \right) , \left( 0 , \frac { 2 } { 7 } \right)$
E) vertices: $\left( 0 , - \frac { 2 } { 7 } \right) , \left( 0 , \frac { 2 } { 7 } \right)$ co-vertices: $\left( - \frac { 3 } { 2 } , 0 \right) , \left( \frac { 3 } { 2 } , 0 \right)$