Say we have a Big Mac meal and you can choose between, Regular, Medium & Large meal and thereafter you select your drink flavor.
When user chooses a Regular Meal, it would be nice if the add-on (drink flavor section) would change to Regular Drink Flavors, when user chooses Medium meal, the add-on then changes to Medium Drink Flavors, etc.
Currently all the Regular, Medium and Large drinks add-on remain static. When user has selected a Large meal, they can select a Regular drink and this means that their total will be less than what the Large meal should cost.