it depends on the intersection. If there is a dedicated right turn lane, then it's 3. If it just happens to be an intersection where 90% of the cars turn right anyway, then 3.

Otherwise it's honestly 1. But that is mainly because I live in an incredibly bike friendly place, and it's pretty unusual for me to be waiting at a light alone. Cars know to look out for cyclists, and if there is already a crowd on the curb, no need to confuse people.