Assume that we are competing different sizes of same brand

Explanation:
First, we find the unit price of a frozen orange juice which costs $1.63 for 14 ounces.
[tex]Unit\text{ Price}=\frac{1.63}{14}=\$0.116\text{ per ounce}[/tex]Next, we find the unit price of a frozen orange juice which costs $0.63 for 4 ounces.
[tex]Un\imaginaryI t\text{ Pr}\imaginaryI\text{ce}=\frac{0.63}{4}=\operatorname{\$}0.158\text{ per ounce}[/tex]The better buy is $1.63 for 14 ounces since it has a lower unit price. Option A is correct.
Answer:
• (a)$0.116 per ounce
,• (b)$0.158 per ounce
,• (c) A. $1.63 for 14 ounce