The last five digits of Zoe\textquotesingle s phone number are $2$, $3$, $4$, $6$, and $8$. If four of these five numbers are filled in the square~$$\huge\square+\square =\square +\square $$, which number is not used?~(Adapted from 2017 Math Kangaroo Problem, Level 1-2, Question \#8) 
选项为:A:$$2$$  B:$$3$$  C:$$4$$  D:$$6$$  E:$$8$$  请回答其中一个选项.