If you read another article that was focused just on Tom Thumb, which of these sentences would work as a main idea?

Tom Thumb was not the only little person to become famous in show business.
Tom Thumb never let his small size keep him from getting what he wanted.
Unlike Tom Thumb, the “mermaid” was a hoax made up by P.T. Barnum.
Lots of circus performers use their physical difference to become famous.