This indicated a longer-term piece of work would need to be undertaken and any decision on that should also form part of considerations for the next Government programme.
Dangosodd hyn y byddai angen gwneud darn o waith mwy hirdymor ac fe ddylai unrhyw benderfyniad ynglŷn â hynny hefyd fod yn rhan o’r ystyriaethau ar gyfer rhaglen nesaf y Llywodraeth.