According to the Bank of Canada's Website,Canada's Consumer Price Index

Multiple Choice

According to the Bank of Canada's website,Canada's Consumer Price Index (CPI) in August 2015 was 127.3,August 2016 was 128.7,August 2017 was 130.5 and August 2018 was 134.2.Given this set of index numbers,what can we conclude about average prices in Canada between August 2015 and August 2018?

A) Average prices increased over this time period by 6.9 percent per year.
B) Average prices decreased over this time period by 6.9%.
C) Average prices decreased each year.
D) Average prices increased over this time period by 6.9%.
E) Average prices increased each year.