What is the correct way to handle this?

LenoxSoft has purchased a list of prospects and wants to send emails to those prospects in Marketing Cloud Account Engagement immediately.

What is the correct way to handle this?
A . Recommend that it is okay to send to purchased lists in Marketing Cloud Account Engagement.
B . Have LenoxSoft split their purchased list into multiple sends so as to not affect the IP’s reputation.
C . Run a permissions pass on the purchased lists to get permission quickly before sending them a marketing email.
D . Recommend that they must receive explicit permission from those prospects on the purchased list before they can upload that prospect list into Marketing Cloud Account Engagement.

Answer: D