What are two considerations for this proposal?

To increase adoption, Universal Containers is proposing changes to its Salesforce data model to allow easier visibility for sales reps into key metrics. The proposal has three custom objectsrelated to the Account object, one with a master-detail, and two that are not. Each of these objects has 15 fields they would like to summarize on the Account object.

What are two considerations for this proposal? Choose 2 answers
A . Roll-up summaries allow MAX, MIN, SUM, COUNT, and AVG.
B . An object can have 20 object references.
C . An object can have 25 roll-up summaries.
D . Roll-up summaries are limited to master-detail relationships.

Answer: A, D

Explanation:

Roll-up summaries allow MAX, MIN, SUM, COUNT, and AVG functions on numeric fields from child records related by a master-detail relationship. Roll-up summaries are limited to master-detail relationships and cannot be used with lookup relationships. An object can have up to 40 roll-up summary fields, not 25. An object can have up to 25 relationship fields (master-detail or lookup), not 20.