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If `a,b,c, in R` and equations `ax^(2) + bx + c =0` and `x^(2) + 2x + 9 = 0` have a common root then

A

`a:b:c=1:2:9`

B

`a:b:c=9:2:4`

C

`a:b:c=9:2:1`

D

`a:b:c=2:1:9`

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The correct Answer is:
A
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