There is a balance and four weights $$1$$g, $$2$$g, $$5$$g and $$10$$g. If Sara wants to weigh an object weighing $$8$$g, how many weights should she use at least? 
选项为:A:$$1$$  B:$$2$$  C:$$3$$  D:$$4$$  E:$$5$$  请回答其中一个选项.