The investigation report is not a purely written issue. The investigation and research work is not done well, and no good method can be used to write a good investigation report. What does this passage say? ['Investigation and research work is more important than writing an investigation report.', 'Investigation and research is a prerequisite for writing a good investigation report.', 'Investigation report is not a purely written question.', 'People who do not write well in the investigation report, also do poorly in the investigation and research work.']