Which of the following would be the BEST way for a technician to deal with a talkative customer?

Which of the following would be the BEST way for a technician to deal with a talkative customer?

A.
Use closed-ended questions to obtain information about the customers problem.

B.
Ask the customer to call back and leave a voice mail about the problem.

C.
Use open-ended questions to gather as much information as possible from the customer.

D.
Interrupt the customer and change the subject to obtain information about the problem.