# Why don't you just tell me who is who?

Logic Level 3

In a small village there are 4 families. Interestingly, each family has a pair of twin sisters. Let the elder sisters be $$ABCD$$ and the younger sisters be $$abcd$$. One day, you went to the village and saw 8 of them and asked, "Which family are each of you belong?"

$$A$$ says, "$$B$$ and $$a$$ are not twin sisters."

$$B$$ says, "$$C$$ and $$d$$ are twin sisters. "

$$C$$ says, "$$D$$ and $$c$$ are not twin sisters."

$$D$$ says, "Among $$ABC$$, only the elder sister of $$d$$ is telling the truth."

Given that $$D$$ is telling the truth, can you know which two are a pair?

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