Find the Center,vertices and Foci of the Hyperbola $21 x ^ { 2 } - 5 y ^ { 2 } = 105$

Multiple Choice

Find the center,vertices and foci of the hyperbola.​ $21 x ^ { 2 } - 5 y ^ { 2 } = 105$ ​

A) Center: (0,0) Vertices: (0,0)
Foci: $( \sqrt { 21 } , 0 )$
B) Center: (0,0) Vertices: $( 0 , \pm \sqrt { 5 } )$
Foci: $( \pm \sqrt { 26 } , 0 )$
C) Center: (0,0) Vertices: $( \pm \sqrt { 5 } , 0 )$
Foci: $( \pm \sqrt { 26 } , 0 )$
D) Center: (0,0) Vertices: $( - \sqrt { 5 } , 0 )$
Foci: $( \pm \sqrt { 26 } , 0 )$
E) Center: (0,0) Vertices: $$( 0 , \pm \sqrt { 5 } )$$
Foci: $( 0 , \pm \sqrt { 26 } )$