Let's think step by step! One of the following sentences is nonsensical. Which one is it?
Options:
- Sentence A: "People usually travel to the other side of the earth on foot"
- Sentence B: "People usually travel to the other side of the earth by plane"

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
It requires air or sea transportation to go to the other side of the world. The answer: Sentence A.