Nesbitt Hires Francois,an Alien Working in the United States with the Legal

Nesbitt hires Francois,an alien working in the United States with the legal authority to do so.One month later,Francois loses his right to work in the United States.Which of the following holds true in this case?

A) Nesbitt's continued employment of Francois cannot constitute a violation of the Immigration Reform and Control Act (IRCA) under any circumstance.
B) Nesbitt's continued employment of Francois will constitute national origin discrimination against individuals with American citizenship.
C) Nesbitt's continued employment of Francois will constitute a violation of the Immigration Reform and Control Act (IRCA) if Nesbitt knows that Francois has become an unauthorized alien.
D) Nesbitt's continued employment of Francois is not unlawful because it is an unfair immigration-related practice for a person to discriminate against any individual based on their national origin.