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Answer:
b. The cost of orange juice is $3 per jug.
Step-by-step explanation:
A "unit rate" is a rate that is "per <single item>" The rates given are per the following numbers of items:
a: 3
b: 1 . . . a unit rate
c: 10
d: 2 (dozen) or 24 (single roses)
The rate of selection B is the only unit rate.
