C 
Alina writes the numbers $1,2,\cdots ,9$ on a separate cards, one number per card. She wishes to divide the cards into $3$ groups of $3$ cards so that the sum of the numbers in each group will be the same. In how many ways can this be done? 
Options:
(1) $$0$$ 
(2) $$1$$ 
(3) $$2$$ 
(4) $$3$$ 
(5) $$4$$ 