Every time the witch has $$1$$ red flower, she turns it into $$3$$ yellow flowers. Every time she has $$1$$ yellow flowers, she turns it into $$2$$ red flowers. Now she has $2$ red flowers and $1$ yellow flowers. What is the smallest number of flowers she can end up with if she cast spells three times? 
选项为:A:$$6$$  B:$$7$$  C:$$8$$  D:$$9$$  E:$$10$$  请回答其中一个选项.