If the consumer price index changes from 120 to 125 between December 2007 and December 2008, the ________.
1) inflation rate for 2008 is 4.2
2) inflation rate for 2008 is 5
3) deflation rate for 2008 is 5
4) deflation rate for 2008 is -4.2
5) inflation rate for 2008 is 10
