A first-level help desk support technician receives a call from a customer and works with the customer to resolve the call for several minutes but the technician is unsuccessful. Which of the...

A first-level help desk support technician receives a call from a customer and works with the customer to resolve the call for several minutes but the technician is unsuccessful. Which of the following steps should the technician perform next?

A.      The technician should explain to the customer that he will receive a callback when someone more qualified is available.

B.      The technician should escalate the call to another technician.

C.      The technician should explain to the customer that the problem cannot be resolved and end the call.

D.      The technician should continue working with the customer until the problem is resolved