You are observing an approaching vessel on radar and note that its compass bearing is slowly but appreciably changing. Under Rule 7, which statement is correct regarding risk of collision?

1. A. Risk of collision does not exist because the bearing is changing appreciably
2. B. Risk of collision is deemed to exist regardless of bearing change
3. ✓ Risk of collision may still exist, particularly when approaching a very large vessel or a tow or when approaching a vessel at close rangeCorrect
4. D. Risk of collision exists only if the vessel is classified as a vessel restricted in her ability to maneuver