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The month-on-month and year-on-year are important indicators used in descriptive analysis of business. The correct statements about month-on-month and year-on-year are as follows:
A. The calculation method of month-on-month and year-on-year is generally applicable to the observation of long-term business behavior results.
B. It has short-term fluctuation characteristics, so month-on-month should be used as much as possible.
C. When describing the changes in behavior levels over a larger time interval, month-on-month should be used.
D. Month-on-month and year-on-year are used for comparison between dimensional items.
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Month-on-month should be used for short-term fluctuation characteristics; month-on-month should be used when describing changes in behavior levels over a larger time interval; month-on-month and year-on-year are used for comparison between dimensional items.

正确答案是:A。

专业分析:

A: 月环比和年同比的计算方法通常适用于观察长期的业务行为结果。年同比可以反映出业务在较长时间段内的趋势和变化,适用于长期的分析。

B: 月环比具有短期波动特性,但并不是说应该尽可能使用月环比。月环比适用于短期变化的分析,而年同比则更适合长期趋势的观察。

C: 当描述较大时间间隔内的行为水平变化时,应该使用年同比而不是月环比。月环比更适合短期的变化分析。

D: 月环比和年同比并不是用于比较不同维度的项目,而是同一项目在不同时间段内的变化比较。

综上所述,A是正确的陈述,而其他选项都存在一些误解。