Eight grams of racemic alpha-methylbenzylamine was resolved into enantiomers by crystallization of its diastereomeric salts of L-(+)-tartaric acid, followed by neutralization. The isolated (S)-(-)-enantiomer was distilled in vacuum to give 1.5 g of pure amine. Calculate the yield of (S)-(-)-alpha-methylbenzylamine.
A 19%
B 25%
C 38%
D 55%
E 63%