Which solution should the consultant recommend?

Universal Containers is planning to migrate two million account records and 10 million contact records from its existing legacy CRM application to sales cloud.

Which solution should the consultant recommend?
A . Batch Apex
B . Data Import Wizard
C . Data Loader
D . Third-party tool

Answer: D

Explanation:

Using a third-party tool is the best solution for migrating large volumes of data from a legacy CRM application to Salesforce. A third-party tool is a software application that connects to both systems and provides features such as data mapping, transformation, validation, deduplication, and error handling. Some examples of third-party tools are Informatica Cloud, Jitterbit Data Loader, or Talend Open Studio.