The Specific Rotation of (R)-Sec-Butyl Alcohol Is -13

The specific rotation of (R) -sec-butyl alcohol is -13.52. A pure sample of (R) -sec-butyl bromide was converted to sec-butyl alcohol via an S_N2 reaction. What is the specific rotation of
The product, assuming 100% yield?

A) -13.52
B) between 0 and -13.52
C) between 0 and +13.52
D) +13.52
E) zero