Multi-choice problem: Continue writing the next sentence in this paragraph:

How to get good breath
Brush and floss every day.
You should try to stick to a regular brushing schedule so your mouth stays clean and free of bad-breath-causing bacteria. Brush your teeth twice a day, once in the morning and once at night.

Options are:
[i] Brush and floss at least twice a day, as well. This helps clean and prevent bad breath on your breath..
[ii] Brush after meals (though you should wait 30 minutes to brush if you consumed something acidic, as this softens tooth enamel). Use toothpaste that contains baking soda and brush in small circles in the front and back area of your teeth for two to three minutes..
[iii] Don't try to brush every day-you're more likely to develop bad breath. If you stick to brushing once, after lunch..
[iv] If you must brush again, use a fluoride-free toothpaste, as fluoride is good for your breath and has anti-fungal properties. Whenever you brush your teeth try to brush your tongue before brushing again..
[ii]