What defines 'danger close' in artillery operations and who authorizes it?

• A. A proximity condition where fires could threaten friendly forces or civilians; requires commander authorization and strict safety controls.
• B. Any artillery fire that is within five kilometers of a friendly unit; authorized by the fire support officer.
• C. Fire that occurs close to civilian structures but with no command authorization needed.
• D. A planning term describing the tight timing of rounds to hit a target quickly; approved by the operations officer.

Answer: (A)