The Price Index in the First Year Is 150;in the Second

The price index in the first year is 150;in the second year it is 160;and in the third year it is 175.The inflation rate is about

A) 1.07 percent between the first and second years, and 1.09 percent between the second and third years.
B) 5.4 percent between the first and second years, and 9.4 percent between the second and third years.
C) 6.7 percent between the first and second years, and 9.4 percent between the second and third years.
D) 10 percent between the first and second years, and 1.09 percent between the second and third years.