Option E is therefore announced as the preferred option as it is the most affordable, has a lower environmental footprint and is the most practical to deliver.
Felly, Opsiwn E yw'r opsiwn a ffefrir gan mai dyma'r opsiwn mwyaf fforddiadwy, mae ganddo ôl troed amgylcheddol is a dyma'r un mwyaf ymarferol i'w gyflawni.