Exhibit 5-6 Refer to the Structure Below to Answer the Following Question(s)

Exhibit 5-6
Refer to the structure below to answer the following question(s) .
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-Refer to Exhibit 5-6.(S) -(−) -Serine:

A) is dextrorotatory
B) rotates plane-polarized light in a counterclockwise direction
C) rotates plane-polarized light in a clockwise direction
D) is racemic