If -1 +i is a root of x^4 + 4x^3 + 5...

If `-1 +i` is a root of ` x^4 + 4x^3 + 5x^2 + k=0` then its real roots are

A

`1,-2 ,4,-8`

B

`+- 1,2,3`

C

`+- 2i ,2,3`

D

` -3/2 ,-1/ 2, 2 +- sqrt(3)`

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The correct Answer is:

B

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