medium · GMAT Verbal

A municipal water utility switched from monthly to daily meter readings, after which reported household water theft (unbilled consumption traced to tampered meters) fell by half. Utility engineers note that daily readings make tampering easier to detect within a day or two, whereas monthly readings often let tampering go unnoticed for weeks.

Which of the following can be most properly inferred from these statements?

  1. The utility's total billing revenue rose substantially once daily readings began.
  2. Some tampering went undetected longer under monthly readings than under daily readings.
  3. Daily meter readings eliminate any possibility of a household tampering with its meter.
  4. Every household that tampered with its meter was, in time, caught and billed for it.
  5. The utility will keep cutting theft further each time it shortens the reading interval more.

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