If $$6$$ students are wearing jeans, then $$18-6=12$$ are not. The ratio of students wearing jeans to students not wearing jeans is $$6:12=1:2$$. 
In a class of $$18$$ students, $$6$$ are wearing jeans. What is the ratio of students wearing jeans to students not wearing jeans? 

(1) $$1:2$$ 
(2) $$1:3$$ 
(3) $$2:3$$ 
(4) $$2:1$$ 