Read these lines: "They were doing the thing in style, with fourteen dogs. In the nature of Arctic travel there was a reason why fourteen dogs should not drag one sled, and that was that one sled could not carry the food for fourteen dogs. But Charles and Hal did not know this. They had worked the trip out with a pencil." What is the flaw in their plan?

1. 1. The quoted lines state the reason outright: one sled cannot carry food for fourteen dogs. 2. 2. Every extra dog adds pulling power but also adds a daily ration to the same load. 3. 3. So the team eats its own advantage, which is why the number defeats itself. 4. 4. Option B invents a speed problem the lines never raise. 5. 5. Option C says the harnessing is impossible, but the lines show fourteen dogs already hitched. 6. 6. Option D describes the dogs' training, which is not the reason given here. _Source: The Call of the Wild by Jack London (1903)_