At the pharmacy, four different brands of an oral medicine is on offer. You need about $200mL,$ so you probably need to get more than one bottle. Which is the most economical?

Brand B: $$10$ for $100cc$

Brand C$.0\mathrm{.}1$ quart for $$15$

Brand C: $$5$ for $30mL$

Brand A$.$ $$10$ for $3$ fluid ounce