Need some help with the following questions, thanks!

Question 22 The GDP gap is the difference between: O full-employment real GDP and real GDP chain price index. O frictional unemployment and actual real GDP. O actual real GDP and full-employment real GDP. O unemployment rate and real GDP chain price index. Question 23 The best definition of inflation is a(n): O increase in the purchasing power of the dollar. O increase in the price of one important commodity such as food. O temporary increase in prices. O persistent increase in the general level of prices as measured by a price index