A customer wants to import the previous 10 years of customer purchase data in their Marketing Cloud account. Through discovery, it is determined there are over 200 million records they plan to upload via the REST API, and this volume will continue to grow as the current purchase data is added. Which two questions should be asked for further discovery? (Choose 2 answers)

A. Does their License include support for REST APIs?

B. How many API calls are included in their License?

C. Does their License include the Large Data Extensions feature?

D. Why do they require 10 years of historical data in Marketing Cloud?