Which of the following is the best example of a marginal change?
A.
After graduating college, Audrey’s income increases from $500 per month to $3,000 per month.
B.
Morgan gets a raise at her part-time job and is now paid $7.25 per hour instead of $7.00.
C.
Housing prices in an area increase by 40% when a new interstate is built in a small town.
D.
A hard freeze wipes out half of the orange crop in Florida and the price of orange juice doubles.