[Samba] WINS 1c query, many responses: who is chosen?

[Andreas]

Scenario (everything samba-3):
- many subnets, each with a BDC
- one PDC somewhere else
- one WINS at that PDC server
- windows using wins first, bcast next (node-type 8)

When one workstation asks the wins server about the <1c> netbios name
type, the server will answer with the PDC and BDCs IP. What prevents the
workstation from using a controller outside its subnet? Is this
"intelligence" part of the windows workstation DC selection algorithm?
To choose the closest one?