Which logical drives are reserved for the Dell EMC Unity operating system?

A. Drives 0 – 3 on 12-drive and 25-drive DPE models

B. Drives 0 – 3 on only a 12-drive DPE model

Drives 1 – 4 on only a 25-drive DPE model

C. Drives 0 – 3 on only a 25-drive DPE model

Drives 1- 4 on only a 12-drive DPE model

D. Drives 1 – 4 on 12-drive and 25-drive DPE models