$$240\div \frac 23=360$$. 
A glass contains $$240$$ $$\rm ml$$ of water. The water takes up $$\frac 23$$ of the volume of the glass. What is the volume of the glass, in milliliters? 
Options:
(A) $$60$$ 
(B) $$100$$ 
(C) $$120$$ 
(D) $$270$$ 
(E) $$360$$ 