The right order is:
1. Client sends probe request.
2. Either Access Point A or Access Point B sends probe response. Client evaluates access point response. Selects best access point.
3. Client sends authentication request to selected access point A.
4. Access point confirms authentication and registers client.
5. Client sends association request to selected Access Point A.
6. Access point A confirms association and registers client.
The right order is:
1. Client sends probe request.
2. Either Access Point A or Access Point B sends probe response. Client evaluates access point response. Selects best access point.
3. Client sends authentication request to selected access point A.
4. Access point confirms authentication and registers client.
5. Client sends association request to selected Access Point A.
6. Access point A confirms association and registers client.