Find the Center and the Vertices of the Ellipse $81 x ^ { 2 } + y ^ { 2 } = 81$

Multiple Choice

Find the center and the vertices of the ellipse. $81 x ^ { 2 } + y ^ { 2 } = 81$

A) center: (-9, 9) ; vertices: (-1, -9) , (1, 9)
B) center: (0, 0) ; vertices: (0, -9) , (0, 9)
C) center: (0, 0) ; vertices: (-9, -1) , (9, 1)
D) center: (0, 0) ; vertices: (-9, 0) , (9, 0)
E) center: (-9, 9) ; vertices: (-1, 0) , (1, 0)