Optically pure 2-butanol has a specific rotation of $$+13.52$$ degrees. A synthesized and purified sample of 2-butanol has the observed specific rotation of $$+6.76$$ degrees. The correct statement based on this observation is

A

the sample is completely racemized

B

25% of the sample is racemic

C

50% of the sample is racemic

D

6.76% of the sample is racemic