Which is the standard

Which is the standard deviation of the returns on Stock A from 2000 to 2009 closest to?
Year End Stock A Realized Return (R - R) (R - R)2
2000 46.3% 29.85% 0.0891023
2001 26.7% 10.25% 0.0105063
2002 86.9% 70.45% 0.4963203
2003 23.1% 6.65% 0.0044223
2004 0.2% -16.25% 0.0264063
2005 -3.2% -19.65% 0.0386123
2006 -27.0% -43.45% 0.1887903
2007 27.9% 11.45% 0.0131103
2008 -5.1% -21.55% 0.0464403
2009 -11.3% -27.75% 0.0770063
A) 33.2%
B) 16.4%
C) 31.5%
D) 11.0%