Fill in the blanks: The \_\_\_\_\_\_\_ tool allows you to compare up to five domains to see common and unique keywords. With the help of the \_\_\_\_\_\_\_ tool you can pick the best \_\_\_\_\_\_\_ with the most authority.
- Keyword Gap, Backlink Gap, referring domains
- Keyword Gap, Keyword Gap, keywords
- Backlink Gap, Backlink Gap, referring domains
- Keyword Gap, Backlink Gap, backlinks