Let z=(11-3i)/(1+i). If alpha is a real ...

Let `z=(11-3i)/(1+i)`. If `alpha` is a real number such that `z-ialpha` is real, then the value of `alpha` is a)4 b)-4 c)7 d)-7

A

4

B

`-4`

C

7

D

`-7`

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The correct Answer is:

D

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