Read this passage from Through the Looking-Glass by Lewis Carroll.

“I don't know what you mean by ‘glory,’” Alice said.

Humpty Dumpty smiled contemptuously. “Of course you don't—till I tell you. I meant ‘there's a nice knock-down argument for you!’”

“But ‘glory’ doesn't mean ‘a nice knock-down argument,’” Alice objected.

“When I use a word,” Humpty Dumpty said in rather a scornful tone, “it means just what I choose it to mean—neither more nor less.”

How do the underlined words affect the tone of the passage?

They give the passage a neutral tone.
They give the passage a positive tone.
They give the passage a negative tone.
They give the passage a humorous tone.