Rob's Income Was $20,000 in 2005 and $22,000 in 2006

Multiple Choice

Rob's income was $20,000 in 2005 and $22,000 in 2006.If inflation was 6% in 2006,then we can say that Rob's 2006 income

A) simply matched the inflation rate.
B) fell behind the inflation rate.
C) exceeded the inflation rate by 4%.
D) lagged the inflation rate by 2%.