The Price Index Was 170 in the First Year,180 in the Second

Multiple Choice

The price index was 170 in the first year,180 in the second year,and 195 in the third year.The inflation rate was about

A) 5.6 percent between the first and second years,and 7.7 percent between the second and third years.
B) 5.9 percent between the first and second years,and 8.3 percent between the second and third years.
C) 10 percent between the first and second years,and 15 percent between the second and third years.
D) 80 percent between the first and second years,and 95 percent between the second and third years.