polnt$($s$)$ possible

In the Mini$-$Case "Tit$-$for$-$Tat Strategies in Trench Warfare," why did soldiers advise new recruits not to shoot at the enemy?

In the trench warfare of World War I, soldiers advised new recruits not to shoot at the enemy because the enemy

A$.$ was out of range.

B$.$ was unable to retreat.

C$.$ would then shoot at them.

D$.$ would be less likely to surrender.

E$.$ would then be defeated.