The following are the weights (in pounds) of ten people: $100, 115, 135, 140, 180, 197, 230, 250, 260, 270$. Find the $80$-th percentile. 
选项为:A:$$115$$  B:$$135$$  C:$$250$$  D:$$260$$  E:None of the above  请回答其中一个选项.