What action should correct the issue?

While setting up Marketing Cloud Connect, a Marketing Cloud admin navigates to the Marketing Cloud tab in Sales Cloud to complete the integration.

The admin then receives the following error message:

– Insufficient User Permissions.

You have not been designated as an integrated Marketing Cloud user. Contact your system administrator

The admin notices the Marketing Cloud for AppExchange Admin option is selected when looking at the user settings

What action should correct the issue?
A . Apply the Marketing Cloud for AppExchange User option as well
B . Reset al passwords to force new tokens
C . Apply the appropriate user mappings in the CRM configuration
D . Apply the administrator and Marketing Cloud Administrator permission sets to user