The Price Index in the First Year Is 125, in the Second

The price index in the first year is 125, in the second year is 150, and in the third year is 200. What is the inflation rate between the first and second year and between the second and third year?

A) 20 percent between the first and second year, 33 percent between the second and third year
B) 25 percent between the first and second year, 75 percent between the second and third year
C) 25 percent between the first and second year, 50 percent between the second and third year
D) 50 percent between the first and second year, 100 percent between the second and third year