According to Henry Shue,who Should Have Responsibility to Protect Workers

According to Henry Shue,who should have responsibility to protect workers from potential harm caused by imported goods?
I.The employers of the workers facing the potential harm
II.The governments of the people who may be harmed
III.The companies importing the goods
IV.Consumers who ultimately buy the goods

A) I only
B) I and II
C) I,II and III
D) I,II,III and IV