What two things should the developer consider while testing the trigger code?

The Account object in an organization has a master detail relationship to a child object called Branch.

The following automations exist:

• Rollup summary fields

• Custom validation rules

• Duplicate rules

A developer created a trigger on the Account object.

What two things should the developer consider while testing the trigger code? Choose 2 answers
A . Rollup summary fields can cause the parent record to go through Save.
B . The trigger may fire multiple times during a transaction.
C . Duplicate rules are executed once all DML operations commit to the database.
D . The validation rules will cause the trigger to fire again.