$$\frac{1}{4}$$ of the beads in a box are blue. $$\frac{1}{3}$$ of the blue beads are small. lf there are $$700$$ small blue beads, how many beads are there altogether in the box? 
选项为:A:$$1200$$  B:$$2100$$  C:$$2450$$  D:$$4900$$  E:$$8400$$  请回答其中一个选项.