Inflation and deflation — practice question

In $2009$, a country recorded an inflation rate of $2\%$. The table gives the inflation rates for the next years: $2010: 2\%$, $2011: 1\%$, $2012: 0\%$, $2013: -1\%$. In which year did deflation begin?

• A2010
• B2011
• C2012
• D2013