Question: Three of these choices are true about class selectors. Which is NOT true?

1. Multiple classes can be used within the same element.
2. The same class can be used multiple times per page.
3. Class selectors with a leading period
4. Classes can be used multiple times per page but not within the same element.

Answer: The correct answer of the above question is Option D:Classes can be used multiple times per page but not within the same element.