See question below:
Of the following two sentences, which one is against common sense?
Options:
- Sentence A: "Swimming in salty seas is good for the skin."
- Sentence B: "Swimming in a sea with garbage in it is good for the skin."

Reason slowly and give your answer.

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
The dirt and bacterias on the garbage would harm the skin.
The final answer: Sentence B.