This question has tricky answers. A is surely not the correct one, neither is D.
Both B and C could be the correct answer, however, foreign policies rarely have no effect on the domestic policies of a country in this globalized world.
For that reason I'm inclined to say that the correct answer you're seeking for is C - people could be worried whether they will affect their jobs and businesses.
However, stating the answer like this might be a bit paranoid. It's more likely that it will affect them positively as it's not in the interest of a country to negatively punish its citizens.