单项选择题

(Relying on) these convenient metaphors, politicians and military commanders do not see, or do not want to see, what these metaphors (hide): the reality of pain and death, the long-term health effects (for the injury), the psychological (effect on veterans), the environmental effects, not to mention the moral aspects of war.

A.Relying on
B.hide
C.for the injury
D.effect on veterans