; Audi A4 (B6) Original radio options - InCarTec

There are multiple original radio options in the Audi A4 (B6), which option is the original fitted system?

Audi A4 Navi Plus RNS-D Audi A4 Navi Plus RNS-D
Audi A4 Navi Plus RNS-D BOSE Audi A4 Navi Plus RNS-D BOSE
Audi A4 Symphony II Audi A4 Symphony II
Audi A4 Symphony II BOSE Audi A4 Symphony II BOSE