Which is the standard deviation of the returns on the index from 2000 to 2009 cl

Which is the standard deviation of the returns on the index from 2000 to 2009 closest to?Year EndIndex Realized Return(R R)(R R)2200023.6%14.78%0.0218448200124.7%15.88%0.0252174200230.5%21.68%0.047002220039.0%0.18%3.24E-062004-2.0%-10.82%0.01170722005-17.3%-26.12%0.06822542006-24.3%-33.12%0.1096934200732.2%23.38%0.054662420084.4%-4.42%0.001953620097.4%-1.42%0.0002016A) 19.5%B) 20.5%C) 3.8%D) 8.8%