to question no 38 of paper i of jee 2010 the key is ACD as per all the institutes but sri chiatanya has given the answer as ABCD can you please clarify and answer it for me ?

Let Z1 and Z2 be two distinct complex numbers and let Z=......

Dear veluri

Correct answer is A,C,D

Arg(z-z1) = arg(z-z2) this is only possible if z lie outside the line segment z1 z2 .

but as given 0<t<1 so  z intersect the line segment z1 and z2 internally .so option B is not correct

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