Which of the Following Is True of the Copeland Anti-Kickback

Which of the following is true of the Copeland Anti-Kickback Act?

A) According to this act,it is illegal to recruit and/or transport individuals across state lines for the purpose of interfering forcefully or threateningly with peaceful picketing or the right to self-organization.
B) This act forbids federal courts to issue injunctions against specifically described union activities and outlaws yellow-dog contracts.
C) This act establishes a statutory preference for using collective bargaining to resolve conflicts in the employment relationship and for roughly balancing the power of management and labor.
D) This act prohibits anyone from requiring or coercing employees on a public works construction project to return part of their compensation as a condition of continued employment.