On Wednesday, the Federal Trade Commission filed a lawsuit against Facebook alleging that the company had engaged in illegal anti-competitive behaviors to sustain a social media monopoly. Attorneys general from 46 states, D.C., and Guam a coalition that conducted an investigation in conjunction with the FTC filed a separate suit making similar antitrust claims. The FTC is partly seeking to force Facebook to sever its subsidiaries Instagram, which it acquired in 2012 for $1 billion, and WhatsApp, which it acquired in 2014 for $19 billion. The suit will likely be contested for years, and it’s far from a foregone conclusion that Facebook will actually have to break up. But if the FTC is ultimately successful, how would Facebook go about separating itself from Instagram and WhatsApp?