Which two items should an app builder configure to implement this?

Universal Containers wants to build a recruiting app that allows for multiple positions to appear on custom objects websites and postings. UC requires a report that shows the related custom objects of postings .

Which two items should an app builder configure to implement this?
A . Utilize the standard report type
B . Create two new custom report type
C . Configure a postings object with master detail field to both positions and websites
D . Configure a postings object with lookup field to both positions and websites

Answer: B