Find the Center and the Vertices Which Located on the Major

Multiple Choice

Find the center and the vertices which located on the major axis of the ellipse. $81 x ^ { 2 } + y ^ { 2 } = 81$

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