Suppose that the total expenditures for a typical household in 2018 equaled $2,500 per month, while the cost of purchasing exactly the same items in 2020 was $3,000. If 2018 is the base year, the CPI for 2018 equals

Select one:

a. 0.83.

b. 1.20.

c. 1.25.

d. 1.00.