An analyst constructs a histogram and frequency polygon of monthly returns for aggressive equity funds over a 20-year period. Which of the following statements about a histogram or a frequency polygon is FALSE（）

A. Both a histogram and a frequency polygon provide a graphical display of data found in a frequency distribution on.

B. A frequency polygon is a bar chart of continuous data that have been grouped into a frequency distribution.

C. The height of each bar in a histogram represents the absolute frequency for each return interval.

位于吉林省四平市的某企业为国务院国资委下属国有企业，因生产事故造成环境严重污染，按照《环境保护法》之规定，应由( )向该企业下达限期治理通知书。

A．环境保护部

B．吉林省人民政府

C．吉林省环保局

D．四平市环保局