Exam Certified Marketing Cloud Administrator topic 1 question 18 discussion

Explanation: List Detective is the error code that the file would contain for this record. List Detective is a feature that filters out invalid, malformed, or problematic email addresses from being imported or sent to in Marketing Cloud. List Detective uses a set of rules and filters to check email addresses for syntax errors, spam traps, role accounts, or blocked domains. If an email address fails the List Detective validation, it will not be imported or sent to and the file will contain an error code of List Detective

When you import a file into All Subscribers in Salesforce Marketing Cloud, if any records couldn't be imported due to issues like data validation or conflicts, those records are typically included in a "Skipped Records" section in the results file

A is correct.

List Detective is a tool that maintains information on email addresses and domains that could cause deliverability problems for your email sends. So A can not be the right anwer