DPM 2010 requires 64-bit Windows Server 2008 (original or R2) in Standard or Enterprise editions. Option A covers R2, Option B covers original 2008 - both are valid base platforms. Option C is incorrect (32-bit is not supported). Therefore 'A & B' is the correct answer as it encompasses both supported server versions. DPM 2010 does not support 32-bit architecture or older Windows versions.