When deciding how much to save, people care most about after-tax nominal interest rates. after-tax real interest rates. before-tax real interest rates. before-tax nominal interest rates.?

The correct answer that would best complete the given question above would be the second option. Here is the complete statement. When deciding how much to save, people care most about  after-tax real interest rates. Hope this is the answer that you are looking for. 

A) Virtualization

its really simple when you think about it because you are not using as much paper