A says, “My father’s only daughter is B.” How is A related to B?

Question

Accepted Answer

1. A says: “My father's only daughter is B.” So the father has exactly $1$ daughter, named B.

2. If A were a different daughter, the father would have more than $1$ daughter. That contradicts the statement.

3. If A were the same as B, A would say “my father's only daughter is me.” The sentence names B, so A is not that.

4. So A must be male. Therefore A is B's **brother**.

FINAL_ANSWER: c

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Answer

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