Which excerpt from The Call of the Wild provides story details that would likely be absent if Buck were the narrator?

Buck, as a first-person narrator, could describe what he sees and feels, but he would not know the exact total distance the group had traveled unless someone told him. Excerpt A gives the precise figure of eighteen hundred miles and comments on how that distance affects even the toughest dogs. The other excerpts describe the dogs’ actions, fatigue, or effort—details Buck could experience or observe.

AI-written and checked against the verified answer.