这个题怎么看出是欺诈？要是确实是typo error 呢？还有怎么看出是故意要骗客户呢？
After the quarterly newsletter is distributed, a client contacts Khadri claiming that the Westlake Fund actually underperformed the benchmark during the quarter. After researching the issue, Khadri confirms that the client is correct and sends him a letter in which she provides the corrected results. In her letter to the client, she blames the discrepancy—which was the result of a human typographical error—on a computer programming error.