All my rabbits are fed on Alan page rabbit food and are used to greens and vegetables
When buying a new rabbits especially one under 16 weeks remember to check what food they are eating and if different to yours introduce slowly over a week by mixing yours into there normal food, adding more of yours each day and less of these so at the end of the week only the new food remains, also make sure you check if your new rabbit is used to greens, carrots and other veg so you don’t upset there stomach by giving them to them, if you do want them to have veg they have not had introduce slowly a little piece at a time