fussy buns

I just wondering about givivng my two boys apple. I've seen on the forum that some buns get them as a treat. this may be a stupid question but does it matter what kind of apple they get. they normally get a handfull of musili in the morning and night between them and copius amounts of which they love and some veg theough the day. Tried them on spinach and they were not impressed at all with it at all they mostly eat carrort and broccoli they are bit fussy

mine have royal gala as they are juicy and help with Barley's renal problems.Dont think it matters as long as they are edable for you.