; Volkswagen Transporter T5 Original radio options - InCarTec

There are multiple original radio options in the Volkswagen Transporter T5, which option is the original fitted system?

VW-T5-01 - BETA CASSETTE VW-T5-01 - BETA CASSETTE
VW-T5-02 - GAMMA CASSETTE VW-T5-02 - GAMMA CASSETTE
VW-T5-03 - RCD200 VW-T5-03 - RCD200
VW-T5-04 - DELTA VW-T5-04 - DELTA
VW-T5-05 - RNS2 VW-T5-05 - RNS2