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If (x + 2) is the HCF of x^2 + ax + b an...

If `(x + 2)` is the HCF of `x^2 + ax + b` and `x^2 + cx + d (a != c and b != d)`, then which one of the following is correct?

A

`a + c = b + d `

B

`2a + b = 2c + d`

C

`b + 2c = 2a + d`

D

`b - 2c = 2a - d `

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