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@BKB hi bro i think it's d as many institute have solved considering it as single generation that is why they are arriving at the answer as b ... 1st generation means it includes father ,mother etc., 2nd generation includes grandfather etc., correct me if I am wrong .....
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@BKB its not third generation bro ..... Third generation is great grandfather etc., ... It's like current generation , 1st generation , 2nd generation and so on ....
