NA 
In how many different ways can Chloe select two digits out of $$ 0$$, $$1$$, $$ 2$$, $$3$$, $$4$$, $$5$$, $$6$$, $$7$$, $$8$$, and $$9$$ and put into the two boxes to make the below equality correct?  $$ 20- \square =22-\square $$ 
1. $$7$$ 
2. $$8$$ 
3. $$9$$ 
4. $$10$$ 
5. $$12$$ 