; Smart Forfour 1st Gen (W454) * Original radio options - InCarTec

There are multiple original radio options in the Smart Forfour 1st Gen (W454) *, which option is the original fitted system?

Smart ForFour Audio 20 Smart ForFour Audio 20
Smart ForFour Audio 5 Smart ForFour Audio 5
Smart ForFour Comand CD Smart ForFour Comand CD
Smart ForFour Comand DVD Smart ForFour Comand DVD