Read the following article and answer the question by choosing from the options.

For sometime now , I have been limiting my intake of cow 's milk products - any kind of dairy from Milk , cheese , ice cream , yogurt , etc . But I am getting ahead of myself , let me tell you why . Years and years ( from about 10 years old to 22 ) I suffered from chronic sinus infections , and was constantly clearing my throat after a meal . Eventually , my acid reflux got so bad I had to have surgery and an ENT removed some of the tissue lining my throat and nose due to the extensive damage from stomach acid .

What may be the reason for them cutting out dairy ?
Possible answers: (i). None of the above choices .. (ii). It causes issues with stomach acid .. (iii). It causes issues with their skin .. (iv). It causes issues with their breathing .....A:
(ii).