The set of all values of k gt -1 for wh...

The set of all values of `k gt -1` for which the equation
`(3x^(2) +4x +3)^(2) -(k+1) (3x^(2) +4x +3) (3x^(2) +4x +2) +k(3x^(2) +4x +2)^(2) =0` has real roots, is :

A

`{1,5/2]`

B

`[2,3)`

C

`[-1/2 ,1)`

D

`(1/2 ,3/2]-{1}`

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The correct Answer is:

A

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