Graph the ellipse and locate the foci.
+ 
= 1
A. foci at (
, 0) and (-
, 0)
B. foci at (0, 
) and (0, -
)
C. foci at (
, 0) and (-
, 0)
D. foci at (2
, 0) and (-2
, 0)
Answer: B
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+ 
? 1
+ 
? 1
A. 
B. 
C. 
D. 
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