What is the best tool to use to respond to potential customers?

A business posts and runs ad campaigns frequently and gels inquiries from people. The business wants to be able to follow up with each person individually and track communications with them.

What is the best tool to use to respond to potential customers?
A . Page Inbox to read and respond to messages and posts
B. Page Insights to learn more about how the Page is performing
C. Stones to engage with the audience and talk more about the services offered
D. Offers to give potential customers a discount to an initial consultation call

Answer: D