You have been tasked with creating a phone call activity. You want to make sure that the activity appears on the case record timeline. Which of the following is the field that should be modified during the process? 

Answer options:

A. Owner
B. Regarding
C. Attachments
D. Notes

B

Reference: https://docs.microsoft.com/en-us/dynamics365/customerengagement/on-premises/basics/add-phone-call-task-email-appointment-activity-case-record