Nine bus stops are equally spaced along a certain bus route. The distance between the first stop and the third stop is $$600$$ m. How long is the bus route? ($$2004$$ Math kangaroo Problem, Level $$5-6$$, Question \#$$9$$) 
选项为:A:$$1800$$ m  B:$$2100$$ m  C:$$2400$$ m  D:$$2700$$ m  E:$$3000$$ m  请回答其中一个选项.