(Table: the Consumer Price Index (CPI)) What Was the Rate

(Table: The Consumer Price Index (CPI) ) What was the rate of inflation from 2009 to 2010? $$\begin{array} { | l | l | } \hline \text { Table: The Consumer Price Index (CPI) } \\\hline \text { February 2009 } & 212.2 \\\hline \text { February 2010 } & 216.7 \\\hline \text { February 2011 } & 221.6 \\\hline \text { February 2012 } & 224.6 \\\hline\end{array}$$

A) 12.2%.
B) 12.2%
C) 4.5%.
D) 4.5%
E) 2.1%.
F) 2.1%
G) 16.7%.
H) 16.7%