Which capitalization is correct for a title used in a header?

• A. The Great Gatsby is a novel.
• B. the Great Gatsby is a novel.
• C. The great Gatsby is a novel.
• D. The Great gatsby is a novel.

Answer: (A)

When a header includes a title, capitalize the words in the title in title case and keep the rest of the sentence in normal sentence capitalization. The book title should appear as The Great Gatsby, with The, Great, and Gatsby all capitalized because they’re the key words in the title. The remaining words, is a novel, stay lowercase.

This matches the form: The Great Gatsby is a novel.

Starting with a lowercase The or lowering any word that should be capitalized within the title (like Great or Gatsby) breaks the standard rule for titles in headers, so those options aren’t correct.