A & C. Async Soql will load data into a custom object and you can run reports and dashboard on that custom object.

B. Einstein Analytics
C. Async SOQL with a custom object

B. Einstein Analytics: This powerful analytics tool can handle large datasets and provide advanced visualizations, making it suitable for reporting on big objects. Einstein Analytics allows you to extract and analyze data from big objects, enabling NTO to generate the necessary weekly reports.

C. Async SOQL with a custom object: Async SOQL can query large datasets stored in big objects and write the aggregated results to custom objects. NTO can then use these custom objects to create reports and dashboards in Salesforce. This approach allows NTO to handle large volumes of data and fulfill their weekly reporting requirements.

A and C. Use the C to bring data to custom object and A for reporting on custom object

Answer is B and C.

I agree with Sourabh. The answer must be B and C.

Reporting on big objects is not supported using Standard Reports and Dashboards. So Asyn SOQL need to be used.