Which of the following summaries accurately describes the stalemate that developed during World War I?

A. Though the conflict was a total war, battles were fought far from cities to ensure that civilians were not affected.
B. Though little territory was ever gained, military leaders continued sending huge numbers of troops to attack enemy trenches.
C. Though advanced military technology was available, most soldiers weren't trained in its use and relied on traditional tactics.
D. Though many troops died from disease, few soldiers were killed in the small number of actual battles that were fought.