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Sum of the squares of all integral value...

Sum of the squares of all integral values of a for which the inequality `x^(2) + ax + a^(2) + 6a lt 0` is satisfied for all `x in ( 1,2)` must be equal to

A

`((-7-4sqrt5)/2,-2)`

B

`((-7-4sqrt5)/2,-3)`

C

`((-7-4sqrt5)/2,4+3sqrt3)`

D

None of these

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A, B, C
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