which one is correct ?

How important is Consumer purchasing power (CPP) to a country's economic conditions and what statistic can we use to estimate changing purchasing power activity? O CPP is mildly important to an economy and can be seen through the monthly PMI statistics. CPP is very important to an economy and can be estimated through changes to the savings ratio. O CPP is not important but can be seen through changes to the consumer price index (CPP) O CPP is an influence but very low on a country's economic activity and there is no statistic that we can use to estimate it. Clear my choice Check