Find the center, foci, and vertices of the ellipse.
+ 
= 1
A. center at (0, 0)
foci at (0, -7) and (0, 7)
vertices at (0, -49), (0, 49)
B. center at (0, 0)
foci at (-9, 0) and (9, 0)
vertices at (-81, 0), (81, 0)
C. center at (0, 0)
foci at (0, - 4
) and (0, 4
)
vertices at (0, -9), (0, 9)
D. center at (0, 0)
foci at (- 4
, 0) and (4
, 0)
vertices at (-9, 0), (9, 0)
Answer: D
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.
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