A vessel of 110 meters in length is at anchor at night. In addition to the required anchor lights, what additional illumination requirement applies to this vessel?

1. ✓ She shall use available working or equivalent lights to illuminate her decksCorrect
2. B. She shall exhibit two all-round red lights in a vertical line
3. C. She shall exhibit a special flashing light
4. D. She may, at her discretion, illuminate her decks but is not required to do so