(A) is asking what fact about the woman is true, or something similar. In a loosish sense (in the sense that the adjective describes a property of the object of "of"), you could say that usages like "that's good/generous/etc. of you" are closer to (A) than to the examples in (B).
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park sang joonWhat is true of the woman?I would paraphrase it as 'What is true about the woman?'—if that helps.