Under what condition may lateral separation be established between two aircraft using the same VOR station for guidance under KCAA procedural control?

1. When both aircraft are on radials that diverge by at least 15 degrees, and at least one aircraft is 15 NM or more from the station.
2. When both aircraft are on radials that diverge by at least 30 degrees, and at least one aircraft is 15 NM or more from the station.
3. When both aircraft are on radials that diverge by at least 15 degrees, regardless of their distance from the station.
4. When both aircraft are on radials that diverge by at least 45 degrees, and at least one aircraft is 10 NM or more from the station.