A technician has provided a customer with a specific time frame for finding a solution to the customers problem. As the deadline approaches, the technician realizes that a solution has not yet been found. Which of the following would be the BEST action to take next?

A.
Contact the customer to indicate that a solution is not available.

B.
Ask for an extension of the deadline.

C.
Continue working until a solution is found.

D.
Escalate the problem to a supervisor.