fruits

Hello everyone, I'm new to the forum and have a question about feeding fresh fruit and vegetables. What is the right amount in a day, and can you overfeed a guinea pig? I know it's not possible to overdose on vitamin C and shouldn't feed sugary foods like apples and carrots too regularly, but...

With me seeing things about how much vitamin c pigs need (and that being lots) I was wondering which veggies/fruits are high in vitamin c? I know carrots are and obviously oranges, but the boys have carrots quite regularly and get bored, plus we tried a little orange peel the other night but...