The unemployment rate in 2009 was 9.9%. In 2019, it was 3.7%. Which best describes the relative change? A. The unemployment rate is down 163% from 2009 to 2019. B. The 2019 unemployment rate is 37.4% less relative to the 2009 rate. C. The 2019 unemployment rate is 62.6% less relative to the 2009 rate. D. The 2019 unemployment rate is 62.6 percentage points down from 2009. E. None of the above