Write Each Rate or Ratio as a Fraction in Lowest $80 \notin$

Write each rate or ratio as a fraction in lowest terms.
Change to the same units when necessary.
-Find the best buy on salad dressing. You have a coupon for $80 \notin$ off on Brand $\mathrm{E}$ and a coupon for $40 \phi$ off Brand G.

A) 30 ounces of Brand $\mathrm{E}$ for $\$ 3.99$
B) 48 ounces of Brand $\mathrm{E}$ for $\$ 5.09$
C) 36 ounces of Brand $\mathrm{F}$ for $\$ 3.59$
D) 54 ounces of Brand G for $\$ 5.29$