What should a consultant recommend to optimize the public knowledge base?

Northern Trail Outfitter is looking to implement a public Knowledge base. The company has 1, 000 articles stored in an external systems.

Some of the articles are more than 2 years old.

What should a consultant recommend to optimize the public knowledge base?
A . Manually add the top performing articles to Salesforce and select Authenticated Sites as the Channel.
B . Bulk-import all articles to Salesforce and achieve duplicate and outdated articles.
C . Manually add the top performing articles to Salesforce and select the Public Knowledge
Base channel.
D . Bulk-import the top performing articles to Salesforce and select the public knowledge base channel.

Answer: B