You are a global admin in a company with a Microsoft 365 subscription. One user in your organization has a document in his Onedrive account subject to three retention policies. The first policy has a delete action after 4 years. The second policy has a delete action after 15 years. The third policy has a delete action after 1 year. 
When will the user`s document be deleted?

Answer options:

A.1 year
B.15 years
C.4 years
D.Never

Correct Answer: A 
The shortest deletion period wins. In this scenario the third policy with the retention period of 1 year will be the effective policy. 
Reference: 
To know more about retention precedence, please refer to the link below: 

https://docs.microsoft.com/en-za/microsoft-365/compliance/retention?view=o365-worldwide#the-principles-of-retention-or-what-takes-precedence