If 2004 Is the Base Year,then the Inflation Rate for 2005

If 2004 is the base year,then the inflation rate for 2005 equals

A) $\frac{\text { CPI in } 2005-\mathrm{CPI} \text { in } 2004}{\text { CPI in } 2004} \times 100$
B) $\frac { \text { CPI in } 2005 - \text { CPI in } 2004 } { \text { CPI in } 2005 } \times 100 .$
C) $\frac { \text { CPI in } 2004 - \text { CPI in } 2005 } { \text { CPI in } 2004 } \times 100 .$
D) $\frac { \text { CPI in } 2004 - \text { CPI in } 2005 } { \text { CPI in } 2005 } \times 100$