Interpreting an access record with its limits
A fictional equipment-room log contains these entries:
| Time | Badge | Result |
|---|---|---|
| 08:05 | C17 | Denied |
| 08:07 | C17 | Denied |
| 08:09 | E04 | Granted |
Which conclusion is directly supported?
A
Badge C17 was denied twice and badge E04 was granted access; the log alone does not prove whether anyone followed another person inside.
B
Badge C17 definitely entered at 08:07.
C
The person using E04 necessarily stole equipment.
D
No investigation can use a log unless it proves every detail by itself.
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