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Suppose a and b are integers such that x...

Suppose a and b are integers such that `x^(2)+ax+b+1=0` has positive integral solution then

A

`a^(2)+b^(2)` is prime number

B

`a^(2)+b^(2)` is not a prime number

C

`a^(2)+b^(2)` is even number

D

`a^(2)+b^(2)` is odd number

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