Answer:
C) The CPI will overstate the negative impact of inflation on your purchasing per and standard of living
Step-by-step explanation:
This is something common with the consumer price index (CPI) since they use a common/average/normal basket of goods to calculate the inflation rate. But what happens when you do not purchase common or normal goods. For example, the CPI assigns a large value to transportation costs, but what if you work at home, and you only go out once a week. Then all those transportation related expenses do not affect you.
In this case, since you buy uncommon food, not included in the CPI basket, the inflation rate that applies to other common foods does not apply to you. So actually, the CPI is overstating the inflation rate, since your personal inflation rate is much lower.
The problem with calculating a more exact CPI is that you cannot account for everyone's purchases, imagine the billions of transaction that should be recorded. It's totally impractical.