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Question

If z1 and z2 lie on the same side the line ¯az+z¯z+b=0, where aC,a0,bR, then the ratio ¯az1+a¯z1+b¯az2+a¯z2+b is

A
Purely imaginary
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B
A positive real number
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C
A negative real number
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D
None of these
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