medium · GMAT Verbal

Which of the following must be true about Hallcrest's members?

1. Exactly 20% of Hallcrest's members hold Contributor-tier membership and have visited the museum at least six times.
2. At least 20% of Hallcrest's members hold Contributor-tier membership and have visited the museum at least six times.
3. No more than 20% of Hallcrest's members hold Contributor-tier membership and have visited the museum at least six times.
4. Some Hallcrest members hold neither a Contributor-tier membership nor have visited the museum six times this year.
5. At least 45% of Hallcrest's members hold no museum membership tier of any kind.

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