Joe, a technician, has his daily plans forwarded to him by his supervisor. Upon arrival to the second support call of the day, Joe realizes the issue will require much more time than initially scheduled, and several support calls will not be completed. Which of the following would be the appropriate action for Joe? 

Answer options:

A. Contact his supervisor so the supervisor can make scheduling changes.
B. Move the appointments to the next business day.
C. Reach out to a colleague to assist in completing the jobs.
D. Continue to work on the current call, and get to the other as soon as possible.

A