Which three objects should you create?

Your company manufactures parts that are each assigned a unique 12-character alphanumeric serial number. Emails between the company and its customers refer in the serial number.

You need to ensure that ail Microsoft Exchange Online emails containing the serial numbers are retained for five years.

Which three objects should you create? Each correct answer presents part of the solution. NOTE: Each correct selection is worth one point.
A . a trainable classifier
B . a sensitive info type
C . a retention polity
D . a data loss prevention (DLP) policy
E . an auto-labeling policy
F . a retention label
G . a sensitivity label

Answer: B,D,E