Select the sentence below that uses proper punctuation to separate a nonessential phrase from the main sentence.
A.Drivers must complete a written test according to the Department of Transportation before receiving their driver’s license.
B. Drivers must complete a written test according to, the Department of Transportation, before receiving their driver’s license.
C. Drivers must complete a written test, according to the Department of Transportation, before receiving their driver’s license.
D. Drivers must, complete a written test, according to the Department of Transportation before receiving their driver’s license.