Multiple Choice
If the price index is 90 in the first year, and 80 in the next year, what happened to prices?
A) Prices increased by about 11%.
B) Prices decreased by about 10%.
C) Prices increased by about 10%.
D) Prices decreased by about 11%.
E) Prices did not change.
Correct Answer:

Verified
Correct Answer:
Verified
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