Ursa Major Solar wants to convert the relationship between Galaxy and Star from a lookup relationship to a master-detail relationship so each Galaxy record can be equipped with a roll-up summary count of Star records. Which two considerations should be made? (Choose two.)

A. The Star object has fewer than two existing master-detail relationships.
B. The Galaxy object is required to contain existing roll-up summary fields.
C. The Galaxy object has fewer than two existing master-detail relationships.
D. The Star records are all required to have an existing value in their Galaxy field.

Suggest answer: AD

Reference: