Starting with some gold coins and some empty treasure chests, I tried to put $8$ gold coins in each treasure chest, but that makes $1$ gold short to fill all the chests. So instead I put $6$ gold coins in each treasure chest, but then I had $15$ gold coins left over. How many gold coins did I have? ( adapted from 2017 AMC8, Questions \#17) 
选项为:A:$$20$$  B:$$35$$  C:$$49$$  D:$$63$$  E:$$81$$  请回答其中一个选项.