Hello, can you help me with this question by steps and explanation? I'd appreciated it!

If the Consumer Price Index changes from 124 in the year 2009 to 130 in the year2011, the average rate of inflation per year over thistwo-year period is approximately

A.

2.4 percent.

B.

4.8 percent.

C.

5.9 percent.

D.

1.4 percent.

E.

3.3 percent.