Consumers in an Economy Buy Only Three General Types of Products,A,B,and

Consumers in an economy buy only three general types of products,A,B,and C.Changes in the prices of these items from year 1 to year 2 are shown below:

Using year 1 as the base year,the country's inflation rate,from year 1 to year 2 is

A) 0%
B) 3.9%
C) 5.2%
D) 6.3%
E) 7.8%