$$4$$ years ago, the sum of the ages of Amy and Bella is $$13$$ years old. The age of Bella after $$17$$ years is $$21$$ years older than the age of Chris $$19$$ years before. The age of Chris now is $$5$$ times the age of Amy. How old is Bella now?  $$4$$年前，小艾和小贝的年龄加起来是$$13$$岁．小贝$$17$$年后的年龄比小克$$19$$年前的年龄大$$21$$岁．小克现在的年龄是小艾的$$5$$倍．小贝现在~\uline{~~~~~~~~~~}~岁. 
选项为:A:$$13$$  B:$$16$$  C:$$18$$  D:$$15$$  E:$$14$$  请回答其中一个选项.