Mr. $$A$$ owns a home worth ＄$$10000$$. He sells it to Mr. $$B$$ at a $$10\textbackslash\%$$ profit based on the worth of the house. Mr. $$B$$ sells the house back to Mr. $$A$$ at a $$10\textbackslash\%$$ loss. Then: ($$1951$$ AHSME Problem, Question \#$$5$$) 
选项为:A:$$A$$ comes out even  B:$$A$$ makes ＄$$1100$$ on the deal  C:$$A$$ makes ＄$$1000$$ on the deal  D:$$A$$ loses ＄$$900$$ on the deal  E:$$A$$ loses ＄$$1000$$ on the deal  请回答其中一个选项.