阿曼達$$4$$個表兄弟的平均年齡是$$8$$，年齡的中位數是$$5$$，則阿曼達的表兄弟中最年長者與最年輕者的年齡和爲何？  The mean age of Amanda\textquotesingle s $$4$$ cousins is $$8$$, and their median age is $$5$$. What is the sum of the ages of Amanda\textquotesingle s youngest and oldest cousins?
选项为:A:$$13$$  B:$$16$$  C:$$19$$  D:$$22$$  E:$$25$$  请回答其中一个选项.