If the Consumer Price Index Changes from 120 to 125

Multiple Choice

If the consumer price index changes from 120 to 125 between December 2018 and December 2019, the:

A) inflation rate for 2010 is 4.2%.
B) inflation rate for 2010 is 4.2%
C) inflation rate for 2010 is 5%
D) inflation rate for 2010 is 5%.
E) deflation rate for 2010 is 5%.
F) deflation rate for 2010 is 5%
G) deflation rate for 2010 is 4.2%
H) deflation rate for 2010 is 4.2%.