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The distance between the foci of the ell...

The distance between the foci of the ellipse`((x +2) ^(2) )/(9 ) + (( y -1) ^(2))/(4)=1` is

A

a) `sqrt5`

B

b) `2sqrt5`

C

c) `3 sqrt5`

D

d) `9 sqrt5`

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