$$85+77-150=12$$ 
$$150$$ students went to a $$\text{CCA}$$ fair and all of them at least tried out one activity. $$85$$ students tried out Sports activity. $$77$$ students tried out Art activity. How many students tried out both Sport activity and Art activities? 
Options:
1) $$11$$ 
2) $$12$$ 
3) $$13$$ 
4) $$14$$ 