In union terms, a direct strike occurs

• A. when people refuse to patronize companies that handle products of struck companies
• B. when an organized body of workers withholds its labor to force the employer to comply with its demands
• C. when union members and their supporters refuse to buy products from a company being struck
• D. when workers who have no particular grievance of their own and who may or may not have the same employer decide to strike in support of others