Answer:
D
Explanation:
I imagine that American labor unions accuse the multinational firms of exporting jobs by shifting technology and investment overseas. This is one of the reasons why they enjoy unfair advantages in taxation. Scale economies, on the other hand, are cost advantages that arise when production becomes (more) effective. This is also called the natural level of output or the full employment output. It is very doubtful that unions would protest against it.
I remember learning this, it should be A