Which four lines in this excerpt from stephen crane’s "an episode of war" show that there were poor medical facilities during the civil war, and the injured were not properly tended to in the field hospital?
a. the drivers were tossing the blame of it back and forth, gesticulating and berating, while from the ambulances, both crammed with wounded, there came an occasional groanb. great numbers sat under the trees nursing heads or arms or legs. c. there was a dispute of some kind raging on the steps of the school-house. d. sitting with his back against a tree a man with a face as grey as a new army blanket was serenely smoking a corn-cob pipe. e. "well, let's have a look at it." he seemed possessed suddenly of a great contempt for the lieutenant. f. "you come along with me and i'll 'tend to you." his voice contained the same scorn as if he were saying, "you will have to go to jail."