The Specific Rotation of Optically Pure (R)-C₆H₅CHOHCH₃ Is -42

Multiple Choice

The specific rotation of optically pure (R) -C₆H₅CHOHCH₃ is -42.3°.An optically pure sample of (R) -C₆H₅CHClCH₃ was converted into the corresponding alcohol via an S_N2 reaction.What is the specific rotation of the product?

A) -42.3°
B) between 0° and -42.3°
C) between +42.3° and 0°
D) +42.3°