Of the four light characteristics shown in illustration D019NG below which one does NOT represent a safe water mark of the IALA Buoyage System?

Correct Answer: Option A — A

Safe water marks (fairway buoys) display red and white vertical stripes, a spherical topmark, and Morse code 'A' white lights. Option A fails to represent a standard safe water characteristic due to incorrect striping, lighting, or topmark configurations defined by IALA.