The half-life of \textsuperscript{14}C, a radioactive isotope of carbon, is 5730 years. An archaeology team recently discovered an ancient burial site and detected only 1/4 of the expected amount of~\textsuperscript{14}C in the general environment. How old is this burial site? 
选项为:A:716 years  B:2865 years  C:11460 years  D:22920 years  请回答其中一个选项.