medium · GRE Verbal Reasoning
Last year, Pelican Software doubled the size of its quality-assurance team, and internal testing before each release became far more extensive. Nevertheless, the number of software defects reported by customers rose sharply after the very next release.
Which of the following, if true, does most to explain the surprising result described above?
- The expanded quality-assurance team included several engineers hired away from competing software firms.
- Customers who report one defect are somewhat more likely than other customers to report further defects later.
- Pelican's engineers fixed most of the defects that the expanded team identified before the release shipped.
- Across the software industry, the average number of defects per release has declined in recent years.
- In the same release, Pelican added a one-click tool that made it far easier for customers to report defects.
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