When are workflow rules fired in Salesforce?

Answer options:

A.After validation rules and triggers
B.Before triggers
C.Before validation Rules
D.None of the above

Correct Answer: A 
Workflow rules are field after validation rules and triggers. 
Option B, C and D are incorrect because workflow rules cannot be fired before triggers and before validation rules. 

https://help.salesforce.com/articleView?id=workflow_rules_considerations.htm&type=5

Correct Answer: A 
Workflow rules are field after validation rules and triggers. 
Option B, C and D are incorrect because workflow rules cannot be fired before triggers and before validation rules. 

https://developer.salesforce.com/docs/atlas.en-us.apexcode.meta/apexcode/apex_triggers_order_of_execution.htm

Correct Answer: A 
Workflow rules are field after validation rules and triggers. 
Option B, C and D are incorrect because workflow rules cannot be fired before triggers and before validation rules. 

https://developer.salesforce.com/forums/?id=906F00000008kZUIAY