News is an objective report, and comments are subjective judgments. In order to get rid of subjective assumptions and maintain objective and rational as much as possible, the news must be based on the facts of the news, rather than relying on its own imagination. This determines that reviews can always follow the news. Later, according to news facts, make corresponding comments and value judgments. You cannot run in front of the news, you cannot make judgments beyond the facts of the news, you can't piece together a fact based on fragmented imagination, and then trumpet it. What is the most accurate summary of the main point of this text? ['Comments are an extension of news coverage.', 'Comments are from news but higher than news.', 'Comments are the refinement and sublimation of news facts.', 'Comments must be subjective but must be based on news facts.']