Find the vertices and locate the foci for the hyperbola whose equation is given.
- 
= 1
A. vertices: (-10, 0), (10, 0)
foci: (- 
, 0) , (
, 0)
B. vertices: (-9, 0), (9, 0)
foci: (- 
, 0) , (
, 0)
C. vertices: (-9, 0), (9, 0)
foci: (-10, 0), (10, 0)
D. vertices: (0, -9), (0, 9)
foci: (- 
, 0) , (
, 0)
Answer: B
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C. 
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