how does the story end as a result of his answer

The knight sighed sorely, and thought, but finally told his wife to choose herself whichever option would bring most honor to the two of them. “Thanne have I gete of yow maistrie” (In that case, I’ve got mastery over you) she said – and the knight agreed that she had. The lothly lady asked him to kiss her and “cast up the curtyn” (lift up the curtain) to look on her face – she had transformed into a young and beautiful woman. They lived happily ever after: and, the Wife concludes, let Christ grant all women submissive husbands who sexually satisfy their wives, and let Christ kill all men who will not be governed by their wives.