What reason does the opinion give for failing to abolish the internment camps holding Japanese Americans during the war?

A.
The internment was legal because the law doesn’t protect against prejudice.

B.
The internment was legal because it was both military and justified.

C.
The internment was legal because those affected were not U.S. citizens.

D.
The internment was legal because no enemies of the state were among those interned

B. The opinion gives the reason that the internment was legal because it was both military and justified.