Were the slaves of Rome limited by their former status once they were freed?

Were the slaves of Rome limited by their former status once they were freed?
 
  A) Slaves that were freed were required to work for their former masters in a paid capacity.
  B) Slaves that were freed were not allowed to work for their former masters in any paid capacity.
  C) They were not limited, as they were now citizens of Rome. They had the option of working for their former master, someone else in a paid capacity, or starting their own business.
  D) Slaves that were manumitted were given citizenship rights and forced into the army.
  E) Slaves that were manumitted were allowed to return to their homelands and provide for their families in whatever capacity they could.