Explanation: The question pertains to the archival requirements for radio logs, which, while not strictly mandated for all amateur operations in Part 97, apply if a log is kept or if specific events (like Distress communications) occur. The generally accepted archival periods based on FCC regulatory principles are: * Logs with routine entries (no Distress/Urgency/Safety): Retain for **two years**. * Logs containing Distress, Urgency, or Safety entries: Retain for **three years**. * Logs related to an official investigation: Cannot be destroyed without specific authorization from the FCC. Let's evaluate the given statements: * **A) Retain for two years if there are no Distress entries.** This statement is **true**, as it aligns with the two-year retention period for routine logs. * **B) Retain for one year unless there are Distress or Urgency entries.** This statement is **false**. If there are no Distress or Urgency entries, the required retention period is two years, not one year. * **C) Logs related to an investigation may not be destroyed without specific authorization.** This statement is **true**, a fundamental rule across all FCC-regulated services. * **D) Retain for three years if there are Distress entries.** This statement is **true**, as logs containing Distress communications require a three-year retention period. Therefore, statement B is the false one because it incorrectly specifies a one-year retention period for routine logs.