72、Even though it was not illegal for the bank to share its customers' personal and financial information with an outside marketing company in return for a commission on sales, the state's attorney general accused the bank of engaging in deceptive business practices by failing to honor its promise to its customers to keep records private.
　　(A) by failing to honor its promise to its customers to keep
　　(B) by its failure of honoring its promise to its customers to keep
　　(C) in its failing to honor its promise to its customers of keeping
　　(D) because of its failure in honoring its promise to its customers in keeping
　　(E) because of its failure to honor its promise to its customers of keeping
　　原文意思： 虽然银行和别人分享个人的金融信息不违法， 但是律师仍然指责银行通过一个什么手段（这个手段看不懂）来从事 deceptive business。
　　题目分析：读完原文之后，发现 A 选项没有逻辑错误，先留着。B 用 its failure 显然没有用 failing 好， C 用 in 表示在...方面的意思， 而原文表示通过什么手段的意思， 不能用 in，DE 都用 its failure，没有 failing 好，选 A。