A US company has its assets seized in Mexico for failure to obtain a business permit. The US company is outraged and wants to know if NAFTA allows this. You advise that NAFTA protects alien investors from expropriation by: a. Allowing expropriation only if made for a public purpose and investor is later paid fair compensation. b. Requiring the NAFTA Fair Trade Commission must authorize any expropriation in advance. c. Mandating that investors be paid then-current, local fair market value for assets taken. d. Making expropriation a crime in member states