How many mishap classes are defined in the classifications (A through F)?

How many mishap classes are defined in the classifications (A through F)?

• A. 5
• B. 6
• C. 4
• D. 7

Answer: (B)

Six distinct categories are defined when you label them from A through F. Since the sequence uses six letters, there are six mishap classes in total. Each class corresponds to a different level of severity and criteria for investigation, with the key idea here being simply that the A–F range encompasses six categories. Options that imply fewer or more categories don’t fit this labeling scheme—five would cover A through E, four would be A through D, and seven would require a class beyond F.

Six distinct categories are defined when you label them from A through F. Since the sequence uses six letters, there are six mishap classes in total. Each class corresponds to a different level of severity and criteria for investigation, with the key idea here being simply that the A–F range encompasses six categories. Options that imply fewer or more categories don’t fit this labeling scheme—five would cover A through E, four would be A through D, and seven would require a class beyond F.